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-f4eb214f-m [2019-10-13 22:05:25,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:05:25,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:05:25,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:05:25,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:05:25,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:05:25,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:05:25,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:05:25,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:05:25,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:05:25,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:05:25,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:05:25,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:05:25,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:05:25,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:05:25,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:05:25,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:05:25,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:05:25,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:05:25,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:05:25,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:05:25,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:05:25,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:05:25,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:05:25,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:05:25,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:05:25,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:05:25,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:05:25,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:05:25,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:05:25,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:05:25,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:05:25,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:05:25,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:05:25,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:05:25,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:05:25,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:05:25,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:05:25,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:05:25,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:05:25,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:05:25,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 22:05:25,933 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:05:25,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:05:25,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:05:25,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:05:25,935 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:05:25,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:05:25,935 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:05:25,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:05:25,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:05:25,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:05:25,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:05:25,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:05:25,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:05:25,937 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:05:25,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:05:25,937 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:05:25,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:05:25,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:05:25,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:05:25,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:05:25,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:05:25,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:05:25,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:05:25,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:05:25,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:05:25,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:05:25,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:05:25,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:05:25,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:05:26,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:05:26,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:05:26,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:05:26,277 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:05:26,278 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:05:26,279 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-10-13 22:05:26,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1db24aa3/eba48e97bb5041af9f45b5f20169d0d5/FLAGb40b4cf34 [2019-10-13 22:05:27,104 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:05:27,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-10-13 22:05:27,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1db24aa3/eba48e97bb5041af9f45b5f20169d0d5/FLAGb40b4cf34 [2019-10-13 22:05:27,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1db24aa3/eba48e97bb5041af9f45b5f20169d0d5 [2019-10-13 22:05:27,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:05:27,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:05:27,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:05:27,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:05:27,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:05:27,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:05:27" (1/1) ... [2019-10-13 22:05:27,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21960f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:27, skipping insertion in model container [2019-10-13 22:05:27,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:05:27" (1/1) ... [2019-10-13 22:05:27,207 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:05:27,316 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:05:28,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:05:28,705 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:05:28,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:05:29,222 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:05:29,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:29 WrapperNode [2019-10-13 22:05:29,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:05:29,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:05:29,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:05:29,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:05:29,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:29" (1/1) ... [2019-10-13 22:05:29,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:29" (1/1) ... [2019-10-13 22:05:29,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:29" (1/1) ... [2019-10-13 22:05:29,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:29" (1/1) ... [2019-10-13 22:05:29,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:29" (1/1) ... [2019-10-13 22:05:29,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:29" (1/1) ... [2019-10-13 22:05:29,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:29" (1/1) ... [2019-10-13 22:05:29,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:05:29,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:05:29,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:05:29,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:05:29,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:05:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:05:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:05:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-10-13 22:05:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-10-13 22:05:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-10-13 22:05:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-13 22:05:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-13 22:05:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-10-13 22:05:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-10-13 22:05:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure register_chrdev [2019-10-13 22:05:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2019-10-13 22:05:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 22:05:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:05:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:05:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:05:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-13 22:05:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 22:05:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2019-10-13 22:05:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2019-10-13 22:05:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2019-10-13 22:05:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2019-10-13 22:05:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_wait [2019-10-13 22:05:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_command [2019-10-13 22:05:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_completion [2019-10-13 22:05:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_req_sense [2019-10-13 22:05:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_atapi [2019-10-13 22:05:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_sleep [2019-10-13 22:05:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_poll_dsc [2019-10-13 22:05:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_media_access_cmd [2019-10-13 22:05:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_rewind [2019-10-13 22:05:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write_fm [2019-10-13 22:05:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_reset [2019-10-13 22:05:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ready_wait [2019-10-13 22:05:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2019-10-13 22:05:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure xn [2019-10-13 22:05:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_identify [2019-10-13 22:05:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_probe [2019-10-13 22:05:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_detect [2019-10-13 22:05:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_open [2019-10-13 22:05:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ioctl [2019-10-13 22:05:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_release [2019-10-13 22:05:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_read [2019-10-13 22:05:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write [2019-10-13 22:05:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_init [2019-10-13 22:05:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_exit [2019-10-13 22:05:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:05:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_1 [2019-10-13 22:05:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_2 [2019-10-13 22:05:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_3 [2019-10-13 22:05:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_4 [2019-10-13 22:05:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_5 [2019-10-13 22:05:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_6 [2019-10-13 22:05:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_7 [2019-10-13 22:05:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_8 [2019-10-13 22:05:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2019-10-13 22:05:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2019-10-13 22:05:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_11 [2019-10-13 22:05:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_12 [2019-10-13 22:05:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_13 [2019-10-13 22:05:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_14 [2019-10-13 22:05:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_15 [2019-10-13 22:05:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev_16 [2019-10-13 22:05:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_17 [2019-10-13 22:05:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:05:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 22:05:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 22:05:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-10-13 22:05:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-10-13 22:05:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-10-13 22:05:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-10-13 22:05:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-13 22:05:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-10-13 22:05:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-10-13 22:05:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-13 22:05:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-13 22:05:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-10-13 22:05:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-10-13 22:05:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-13 22:05:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-13 22:05:29,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-10-13 22:05:29,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_pt_mutex [2019-10-13 22:05:29,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_pt_mutex [2019-10-13 22:05:29,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pt_mutex [2019-10-13 22:05:29,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_pt_mutex [2019-10-13 22:05:29,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_pt_mutex [2019-10-13 22:05:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_pt_mutex [2019-10-13 22:05:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pt_mutex [2019-10-13 22:05:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:05:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:05:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __class_create [2019-10-13 22:05:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-10-13 22:05:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __register_chrdev [2019-10-13 22:05:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __unregister_chrdev [2019-10-13 22:05:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-13 22:05:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 22:05:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2019-10-13 22:05:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2019-10-13 22:05:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2019-10-13 22:05:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 22:05:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-13 22:05:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-10-13 22:05:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 22:05:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2019-10-13 22:05:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2019-10-13 22:05:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2019-10-13 22:05:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2019-10-13 22:05:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2019-10-13 22:05:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2019-10-13 22:05:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2019-10-13 22:05:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_regr [2019-10-13 22:05:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:05:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2019-10-13 22:05:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-13 22:05:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:05:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:05:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:05:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:05:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 22:05:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:05:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 22:05:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-13 22:05:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-13 22:05:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-10-13 22:05:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-10-13 22:05:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-10-13 22:05:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:05:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-13 22:05:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:05:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-13 22:05:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-10-13 22:05:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-10-13 22:05:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_4 [2019-10-13 22:05:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 22:05:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_2 [2019-10-13 22:05:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_5 [2019-10-13 22:05:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_7 [2019-10-13 22:05:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2019-10-13 22:05:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2019-10-13 22:05:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_11 [2019-10-13 22:05:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_13 [2019-10-13 22:05:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_15 [2019-10-13 22:05:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-13 22:05:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_1 [2019-10-13 22:05:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_3 [2019-10-13 22:05:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_6 [2019-10-13 22:05:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_8 [2019-10-13 22:05:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_12 [2019-10-13 22:05:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_14 [2019-10-13 22:05:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-10-13 22:05:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-10-13 22:05:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-10-13 22:05:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-10-13 22:05:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-10-13 22:05:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pt_mutex [2019-10-13 22:05:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pt_mutex [2019-10-13 22:05:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:05:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-10-13 22:05:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure __register_chrdev [2019-10-13 22:05:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure __unregister_chrdev [2019-10-13 22:05:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure register_chrdev [2019-10-13 22:05:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev_16 [2019-10-13 22:05:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2019-10-13 22:05:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_17 [2019-10-13 22:05:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-10-13 22:05:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-10-13 22:05:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:05:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:05:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:05:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 22:05:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:05:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:05:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:05:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:05:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure __class_create [2019-10-13 22:05:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2019-10-13 22:05:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2019-10-13 22:05:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2019-10-13 22:05:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2019-10-13 22:05:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 22:05:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-13 22:05:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-13 22:05:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 22:05:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2019-10-13 22:05:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2019-10-13 22:05:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_regr [2019-10-13 22:05:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2019-10-13 22:05:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2019-10-13 22:05:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2019-10-13 22:05:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2019-10-13 22:05:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2019-10-13 22:05:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure pt_open [2019-10-13 22:05:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ioctl [2019-10-13 22:05:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure pt_release [2019-10-13 22:05:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure pt_read [2019-10-13 22:05:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write [2019-10-13 22:05:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure pt_detect [2019-10-13 22:05:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure pt_identify [2019-10-13 22:05:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2019-10-13 22:05:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2019-10-13 22:05:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2019-10-13 22:05:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2019-10-13 22:05:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure pt_wait [2019-10-13 22:05:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:05:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure pt_command [2019-10-13 22:05:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure pt_completion [2019-10-13 22:05:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure pt_req_sense [2019-10-13 22:05:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:05:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure pt_atapi [2019-10-13 22:05:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure pt_sleep [2019-10-13 22:05:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure pt_poll_dsc [2019-10-13 22:05:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure pt_media_access_cmd [2019-10-13 22:05:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure pt_rewind [2019-10-13 22:05:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write_fm [2019-10-13 22:05:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure pt_reset [2019-10-13 22:05:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ready_wait [2019-10-13 22:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2019-10-13 22:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure xn [2019-10-13 22:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure pt_probe [2019-10-13 22:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure pt_init [2019-10-13 22:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure pt_exit [2019-10-13 22:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 22:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-10-13 22:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-10-13 22:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-10-13 22:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-10-13 22:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-13 22:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-10-13 22:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-13 22:05:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-13 22:05:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-13 22:05:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-13 22:05:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_pt_mutex [2019-10-13 22:05:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_pt_mutex [2019-10-13 22:05:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_pt_mutex [2019-10-13 22:05:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_pt_mutex [2019-10-13 22:05:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_pt_mutex [2019-10-13 22:05:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:05:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:05:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-13 22:05:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:05:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:05:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:05:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:05:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:05:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:05:38,781 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:05:38,781 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 22:05:38,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:05:38 BoogieIcfgContainer [2019-10-13 22:05:38,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:05:38,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:05:38,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:05:38,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:05:38,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:05:27" (1/3) ... [2019-10-13 22:05:38,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c63866c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:05:38, skipping insertion in model container [2019-10-13 22:05:38,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:05:29" (2/3) ... [2019-10-13 22:05:38,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c63866c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:05:38, skipping insertion in model container [2019-10-13 22:05:38,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:05:38" (3/3) ... [2019-10-13 22:05:38,797 INFO L109 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-10-13 22:05:38,809 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:05:38,822 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:05:38,833 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:05:38,869 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:05:38,869 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:05:38,870 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:05:38,870 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:05:38,870 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:05:38,870 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:05:38,870 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:05:38,870 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:05:38,916 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states. [2019-10-13 22:05:38,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 22:05:38,930 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:38,931 INFO L380 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] [2019-10-13 22:05:38,932 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:38,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:38,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2135758099, now seen corresponding path program 1 times [2019-10-13 22:05:38,945 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:38,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188078181] [2019-10-13 22:05:38,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:38,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:38,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:05:39,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188078181] [2019-10-13 22:05:39,472 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:39,472 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:05:39,472 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480763] [2019-10-13 22:05:39,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:05:39,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:39,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:05:39,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:39,493 INFO L87 Difference]: Start difference. First operand 761 states. Second operand 3 states. [2019-10-13 22:05:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:39,736 INFO L93 Difference]: Finished difference Result 1660 states and 2330 transitions. [2019-10-13 22:05:39,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:39,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-13 22:05:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:39,771 INFO L225 Difference]: With dead ends: 1660 [2019-10-13 22:05:39,771 INFO L226 Difference]: Without dead ends: 964 [2019-10-13 22:05:39,784 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-10-13 22:05:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 921. [2019-10-13 22:05:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2019-10-13 22:05:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1246 transitions. [2019-10-13 22:05:39,945 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1246 transitions. Word has length 28 [2019-10-13 22:05:39,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:39,946 INFO L462 AbstractCegarLoop]: Abstraction has 921 states and 1246 transitions. [2019-10-13 22:05:39,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:05:39,947 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1246 transitions. [2019-10-13 22:05:39,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-13 22:05:39,949 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:39,949 INFO L380 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] [2019-10-13 22:05:39,949 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:39,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:39,950 INFO L82 PathProgramCache]: Analyzing trace with hash 253566313, now seen corresponding path program 1 times [2019-10-13 22:05:39,950 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:39,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013088284] [2019-10-13 22:05:39,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:39,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:39,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:05:40,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013088284] [2019-10-13 22:05:40,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:40,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:05:40,168 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145085748] [2019-10-13 22:05:40,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:05:40,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:40,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:05:40,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:05:40,171 INFO L87 Difference]: Start difference. First operand 921 states and 1246 transitions. Second operand 4 states. [2019-10-13 22:05:41,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:41,564 INFO L93 Difference]: Finished difference Result 1833 states and 2485 transitions. [2019-10-13 22:05:41,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:41,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-13 22:05:41,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:41,573 INFO L225 Difference]: With dead ends: 1833 [2019-10-13 22:05:41,573 INFO L226 Difference]: Without dead ends: 921 [2019-10-13 22:05:41,578 INFO L600 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 [2019-10-13 22:05:41,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-10-13 22:05:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 921. [2019-10-13 22:05:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2019-10-13 22:05:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1244 transitions. [2019-10-13 22:05:41,639 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1244 transitions. Word has length 27 [2019-10-13 22:05:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:41,640 INFO L462 AbstractCegarLoop]: Abstraction has 921 states and 1244 transitions. [2019-10-13 22:05:41,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:05:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1244 transitions. [2019-10-13 22:05:41,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-13 22:05:41,642 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:41,642 INFO L380 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] [2019-10-13 22:05:41,643 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:41,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:41,643 INFO L82 PathProgramCache]: Analyzing trace with hash 250768757, now seen corresponding path program 1 times [2019-10-13 22:05:41,643 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:41,643 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425522257] [2019-10-13 22:05:41,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:41,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:41,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:05:41,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425522257] [2019-10-13 22:05:41,784 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:41,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:05:41,785 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130646703] [2019-10-13 22:05:41,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:05:41,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:41,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:05:41,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:41,786 INFO L87 Difference]: Start difference. First operand 921 states and 1244 transitions. Second operand 3 states. [2019-10-13 22:05:41,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:41,906 INFO L93 Difference]: Finished difference Result 1859 states and 2527 transitions. [2019-10-13 22:05:41,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:41,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-10-13 22:05:41,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:41,917 INFO L225 Difference]: With dead ends: 1859 [2019-10-13 22:05:41,917 INFO L226 Difference]: Without dead ends: 947 [2019-10-13 22:05:41,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:41,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2019-10-13 22:05:41,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 923. [2019-10-13 22:05:41,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2019-10-13 22:05:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1246 transitions. [2019-10-13 22:05:41,976 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1246 transitions. Word has length 35 [2019-10-13 22:05:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:41,977 INFO L462 AbstractCegarLoop]: Abstraction has 923 states and 1246 transitions. [2019-10-13 22:05:41,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:05:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1246 transitions. [2019-10-13 22:05:41,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-13 22:05:41,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:41,984 INFO L380 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] [2019-10-13 22:05:41,984 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:41,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:41,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1659733765, now seen corresponding path program 1 times [2019-10-13 22:05:41,985 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:41,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47582426] [2019-10-13 22:05:41,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:41,986 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:41,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:05:42,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47582426] [2019-10-13 22:05:42,117 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:42,117 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:05:42,117 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386981814] [2019-10-13 22:05:42,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:05:42,118 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:42,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:05:42,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:42,118 INFO L87 Difference]: Start difference. First operand 923 states and 1246 transitions. Second operand 3 states. [2019-10-13 22:05:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:42,543 INFO L93 Difference]: Finished difference Result 2015 states and 2712 transitions. [2019-10-13 22:05:42,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:42,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-10-13 22:05:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:42,625 INFO L225 Difference]: With dead ends: 2015 [2019-10-13 22:05:42,625 INFO L226 Difference]: Without dead ends: 1101 [2019-10-13 22:05:42,628 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:42,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2019-10-13 22:05:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1101. [2019-10-13 22:05:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2019-10-13 22:05:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1472 transitions. [2019-10-13 22:05:42,688 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1472 transitions. Word has length 40 [2019-10-13 22:05:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:42,688 INFO L462 AbstractCegarLoop]: Abstraction has 1101 states and 1472 transitions. [2019-10-13 22:05:42,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:05:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1472 transitions. [2019-10-13 22:05:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 22:05:42,690 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:42,690 INFO L380 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] [2019-10-13 22:05:42,690 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:42,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1078756022, now seen corresponding path program 1 times [2019-10-13 22:05:42,691 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:42,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371705460] [2019-10-13 22:05:42,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:42,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:42,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:05:42,841 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371705460] [2019-10-13 22:05:42,841 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:42,842 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:05:42,842 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149565493] [2019-10-13 22:05:42,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:05:42,842 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:42,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:05:42,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:42,843 INFO L87 Difference]: Start difference. First operand 1101 states and 1472 transitions. Second operand 3 states. [2019-10-13 22:05:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:42,902 INFO L93 Difference]: Finished difference Result 2200 states and 2952 transitions. [2019-10-13 22:05:42,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:42,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-10-13 22:05:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:42,910 INFO L225 Difference]: With dead ends: 2200 [2019-10-13 22:05:42,910 INFO L226 Difference]: Without dead ends: 1117 [2019-10-13 22:05:42,916 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2019-10-13 22:05:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1113. [2019-10-13 22:05:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2019-10-13 22:05:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1490 transitions. [2019-10-13 22:05:42,965 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1490 transitions. Word has length 42 [2019-10-13 22:05:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:42,966 INFO L462 AbstractCegarLoop]: Abstraction has 1113 states and 1490 transitions. [2019-10-13 22:05:42,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:05:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1490 transitions. [2019-10-13 22:05:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 22:05:42,967 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:42,967 INFO L380 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] [2019-10-13 22:05:42,968 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash 925321270, now seen corresponding path program 1 times [2019-10-13 22:05:42,968 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:42,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261074792] [2019-10-13 22:05:42,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:42,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:42,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:05:43,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261074792] [2019-10-13 22:05:43,097 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:43,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:05:43,098 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850202331] [2019-10-13 22:05:43,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:05:43,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:43,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:05:43,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:43,099 INFO L87 Difference]: Start difference. First operand 1113 states and 1490 transitions. Second operand 3 states. [2019-10-13 22:05:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:43,505 INFO L93 Difference]: Finished difference Result 1115 states and 1491 transitions. [2019-10-13 22:05:43,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:43,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-13 22:05:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:43,513 INFO L225 Difference]: With dead ends: 1115 [2019-10-13 22:05:43,514 INFO L226 Difference]: Without dead ends: 1112 [2019-10-13 22:05:43,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:43,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-10-13 22:05:43,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2019-10-13 22:05:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-10-13 22:05:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1488 transitions. [2019-10-13 22:05:43,566 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1488 transitions. Word has length 47 [2019-10-13 22:05:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:43,567 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1488 transitions. [2019-10-13 22:05:43,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:05:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1488 transitions. [2019-10-13 22:05:43,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-13 22:05:43,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:43,568 INFO L380 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] [2019-10-13 22:05:43,568 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1380369154, now seen corresponding path program 1 times [2019-10-13 22:05:43,569 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:43,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658496657] [2019-10-13 22:05:43,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:43,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:43,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:05:43,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658496657] [2019-10-13 22:05:43,696 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:43,697 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:05:43,697 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559213827] [2019-10-13 22:05:43,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:05:43,698 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:43,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:05:43,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:43,698 INFO L87 Difference]: Start difference. First operand 1112 states and 1488 transitions. Second operand 3 states. [2019-10-13 22:05:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:44,303 INFO L93 Difference]: Finished difference Result 1114 states and 1489 transitions. [2019-10-13 22:05:44,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:44,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-10-13 22:05:44,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:44,311 INFO L225 Difference]: With dead ends: 1114 [2019-10-13 22:05:44,311 INFO L226 Difference]: Without dead ends: 1111 [2019-10-13 22:05:44,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2019-10-13 22:05:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2019-10-13 22:05:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2019-10-13 22:05:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1486 transitions. [2019-10-13 22:05:44,369 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1486 transitions. Word has length 48 [2019-10-13 22:05:44,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:44,369 INFO L462 AbstractCegarLoop]: Abstraction has 1111 states and 1486 transitions. [2019-10-13 22:05:44,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:05:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1486 transitions. [2019-10-13 22:05:44,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 22:05:44,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:44,371 INFO L380 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] [2019-10-13 22:05:44,371 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash 157676601, now seen corresponding path program 1 times [2019-10-13 22:05:44,372 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:44,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841016684] [2019-10-13 22:05:44,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:44,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:44,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:05:44,481 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841016684] [2019-10-13 22:05:44,482 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:44,482 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:05:44,482 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706269291] [2019-10-13 22:05:44,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:05:44,483 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:44,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:05:44,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:44,483 INFO L87 Difference]: Start difference. First operand 1111 states and 1486 transitions. Second operand 3 states. [2019-10-13 22:05:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:44,915 INFO L93 Difference]: Finished difference Result 1113 states and 1487 transitions. [2019-10-13 22:05:44,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:44,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2019-10-13 22:05:44,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:44,924 INFO L225 Difference]: With dead ends: 1113 [2019-10-13 22:05:44,924 INFO L226 Difference]: Without dead ends: 1110 [2019-10-13 22:05:44,926 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2019-10-13 22:05:45,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2019-10-13 22:05:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2019-10-13 22:05:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1484 transitions. [2019-10-13 22:05:45,060 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1484 transitions. Word has length 49 [2019-10-13 22:05:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:45,060 INFO L462 AbstractCegarLoop]: Abstraction has 1110 states and 1484 transitions. [2019-10-13 22:05:45,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:05:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1484 transitions. [2019-10-13 22:05:45,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-13 22:05:45,061 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:45,062 INFO L380 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] [2019-10-13 22:05:45,062 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:45,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:45,062 INFO L82 PathProgramCache]: Analyzing trace with hash 592459617, now seen corresponding path program 1 times [2019-10-13 22:05:45,062 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:45,063 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636272750] [2019-10-13 22:05:45,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:45,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:45,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:05:45,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636272750] [2019-10-13 22:05:45,182 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:45,182 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:05:45,183 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624593464] [2019-10-13 22:05:45,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:05:45,183 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:45,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:05:45,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:45,184 INFO L87 Difference]: Start difference. First operand 1110 states and 1484 transitions. Second operand 3 states. [2019-10-13 22:05:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:45,800 INFO L93 Difference]: Finished difference Result 1271 states and 1688 transitions. [2019-10-13 22:05:45,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:45,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-10-13 22:05:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:45,810 INFO L225 Difference]: With dead ends: 1271 [2019-10-13 22:05:45,810 INFO L226 Difference]: Without dead ends: 1229 [2019-10-13 22:05:45,812 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2019-10-13 22:05:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2019-10-13 22:05:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2019-10-13 22:05:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1637 transitions. [2019-10-13 22:05:45,877 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1637 transitions. Word has length 50 [2019-10-13 22:05:45,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:45,878 INFO L462 AbstractCegarLoop]: Abstraction has 1229 states and 1637 transitions. [2019-10-13 22:05:45,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:05:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1637 transitions. [2019-10-13 22:05:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-13 22:05:45,880 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:45,880 INFO L380 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] [2019-10-13 22:05:45,881 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:45,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:45,881 INFO L82 PathProgramCache]: Analyzing trace with hash 171832610, now seen corresponding path program 1 times [2019-10-13 22:05:45,881 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:45,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520582502] [2019-10-13 22:05:45,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:45,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:45,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:05:46,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520582502] [2019-10-13 22:05:46,020 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:46,020 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 22:05:46,020 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8794792] [2019-10-13 22:05:46,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:05:46,021 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:46,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:05:46,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:05:46,022 INFO L87 Difference]: Start difference. First operand 1229 states and 1637 transitions. Second operand 6 states. [2019-10-13 22:05:46,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:46,127 INFO L93 Difference]: Finished difference Result 2496 states and 3342 transitions. [2019-10-13 22:05:46,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 22:05:46,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2019-10-13 22:05:46,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:46,140 INFO L225 Difference]: With dead ends: 2496 [2019-10-13 22:05:46,140 INFO L226 Difference]: Without dead ends: 1285 [2019-10-13 22:05:46,147 INFO L600 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 [2019-10-13 22:05:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2019-10-13 22:05:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1285. [2019-10-13 22:05:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1285 states. [2019-10-13 22:05:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1721 transitions. [2019-10-13 22:05:46,236 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1721 transitions. Word has length 90 [2019-10-13 22:05:46,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:46,236 INFO L462 AbstractCegarLoop]: Abstraction has 1285 states and 1721 transitions. [2019-10-13 22:05:46,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:05:46,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1721 transitions. [2019-10-13 22:05:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 22:05:46,239 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:46,239 INFO L380 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] [2019-10-13 22:05:46,240 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:46,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1196424685, now seen corresponding path program 1 times [2019-10-13 22:05:46,240 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:46,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811740969] [2019-10-13 22:05:46,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:46,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:46,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:05:46,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811740969] [2019-10-13 22:05:46,384 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:46,384 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:05:46,384 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797782196] [2019-10-13 22:05:46,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:05:46,385 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:46,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:05:46,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:05:46,385 INFO L87 Difference]: Start difference. First operand 1285 states and 1721 transitions. Second operand 5 states. [2019-10-13 22:05:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:46,461 INFO L93 Difference]: Finished difference Result 2580 states and 3468 transitions. [2019-10-13 22:05:46,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:05:46,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-13 22:05:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:46,545 INFO L225 Difference]: With dead ends: 2580 [2019-10-13 22:05:46,545 INFO L226 Difference]: Without dead ends: 1313 [2019-10-13 22:05:46,550 INFO L600 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 [2019-10-13 22:05:46,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2019-10-13 22:05:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1297. [2019-10-13 22:05:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2019-10-13 22:05:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1739 transitions. [2019-10-13 22:05:46,624 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1739 transitions. Word has length 100 [2019-10-13 22:05:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:46,624 INFO L462 AbstractCegarLoop]: Abstraction has 1297 states and 1739 transitions. [2019-10-13 22:05:46,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:05:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1739 transitions. [2019-10-13 22:05:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 22:05:46,626 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:46,626 INFO L380 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] [2019-10-13 22:05:46,627 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:46,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:46,627 INFO L82 PathProgramCache]: Analyzing trace with hash -305324997, now seen corresponding path program 1 times [2019-10-13 22:05:46,627 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:46,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436631163] [2019-10-13 22:05:46,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:46,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:46,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:05:46,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436631163] [2019-10-13 22:05:46,748 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:46,748 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:05:46,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302590340] [2019-10-13 22:05:46,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:05:46,749 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:46,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:05:46,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:05:46,750 INFO L87 Difference]: Start difference. First operand 1297 states and 1739 transitions. Second operand 5 states. [2019-10-13 22:05:46,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:46,840 INFO L93 Difference]: Finished difference Result 2688 states and 3638 transitions. [2019-10-13 22:05:46,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 22:05:46,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-13 22:05:46,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:46,849 INFO L225 Difference]: With dead ends: 2688 [2019-10-13 22:05:46,850 INFO L226 Difference]: Without dead ends: 1409 [2019-10-13 22:05:46,856 INFO L600 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 [2019-10-13 22:05:46,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2019-10-13 22:05:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1305. [2019-10-13 22:05:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2019-10-13 22:05:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1747 transitions. [2019-10-13 22:05:46,929 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1747 transitions. Word has length 100 [2019-10-13 22:05:46,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:46,930 INFO L462 AbstractCegarLoop]: Abstraction has 1305 states and 1747 transitions. [2019-10-13 22:05:46,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:05:46,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1747 transitions. [2019-10-13 22:05:46,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-13 22:05:46,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:46,934 INFO L380 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] [2019-10-13 22:05:46,934 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:46,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:46,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1004996624, now seen corresponding path program 1 times [2019-10-13 22:05:46,935 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:46,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148002974] [2019-10-13 22:05:46,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:46,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:46,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 22:05:47,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148002974] [2019-10-13 22:05:47,170 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:47,170 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:05:47,170 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41143324] [2019-10-13 22:05:47,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:05:47,171 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:47,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:05:47,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:05:47,172 INFO L87 Difference]: Start difference. First operand 1305 states and 1747 transitions. Second operand 4 states. [2019-10-13 22:05:47,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:47,264 INFO L93 Difference]: Finished difference Result 2628 states and 3560 transitions. [2019-10-13 22:05:47,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:05:47,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2019-10-13 22:05:47,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:47,273 INFO L225 Difference]: With dead ends: 2628 [2019-10-13 22:05:47,274 INFO L226 Difference]: Without dead ends: 1341 [2019-10-13 22:05:47,280 INFO L600 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 [2019-10-13 22:05:47,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2019-10-13 22:05:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1309. [2019-10-13 22:05:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2019-10-13 22:05:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1751 transitions. [2019-10-13 22:05:47,357 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1751 transitions. Word has length 197 [2019-10-13 22:05:47,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:47,357 INFO L462 AbstractCegarLoop]: Abstraction has 1309 states and 1751 transitions. [2019-10-13 22:05:47,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:05:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1751 transitions. [2019-10-13 22:05:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 22:05:47,363 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:47,363 INFO L380 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] [2019-10-13 22:05:47,363 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:47,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1891694374, now seen corresponding path program 1 times [2019-10-13 22:05:47,364 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:47,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213266967] [2019-10-13 22:05:47,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:47,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:47,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 22:05:47,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213266967] [2019-10-13 22:05:47,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:47,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:05:47,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559022612] [2019-10-13 22:05:47,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:05:47,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:47,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:05:47,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:47,677 INFO L87 Difference]: Start difference. First operand 1309 states and 1751 transitions. Second operand 3 states. [2019-10-13 22:05:47,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:47,785 INFO L93 Difference]: Finished difference Result 2612 states and 3530 transitions. [2019-10-13 22:05:47,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:47,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2019-10-13 22:05:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:47,798 INFO L225 Difference]: With dead ends: 2612 [2019-10-13 22:05:47,799 INFO L226 Difference]: Without dead ends: 1321 [2019-10-13 22:05:47,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:47,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2019-10-13 22:05:47,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1313. [2019-10-13 22:05:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2019-10-13 22:05:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1755 transitions. [2019-10-13 22:05:47,883 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1755 transitions. Word has length 204 [2019-10-13 22:05:47,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:47,884 INFO L462 AbstractCegarLoop]: Abstraction has 1313 states and 1755 transitions. [2019-10-13 22:05:47,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:05:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1755 transitions. [2019-10-13 22:05:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-13 22:05:47,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:47,889 INFO L380 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, 1, 1] [2019-10-13 22:05:47,889 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:47,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash -965286021, now seen corresponding path program 1 times [2019-10-13 22:05:47,889 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:47,890 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877757046] [2019-10-13 22:05:47,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:47,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:47,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 22:05:48,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877757046] [2019-10-13 22:05:48,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:48,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:05:48,147 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201016791] [2019-10-13 22:05:48,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:05:48,148 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:48,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:05:48,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:05:48,149 INFO L87 Difference]: Start difference. First operand 1313 states and 1755 transitions. Second operand 5 states. [2019-10-13 22:05:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:48,254 INFO L93 Difference]: Finished difference Result 2632 states and 3620 transitions. [2019-10-13 22:05:48,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:05:48,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2019-10-13 22:05:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:48,267 INFO L225 Difference]: With dead ends: 2632 [2019-10-13 22:05:48,268 INFO L226 Difference]: Without dead ends: 1337 [2019-10-13 22:05:48,279 INFO L600 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 [2019-10-13 22:05:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2019-10-13 22:05:48,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1329. [2019-10-13 22:05:48,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2019-10-13 22:05:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1785 transitions. [2019-10-13 22:05:48,377 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1785 transitions. Word has length 215 [2019-10-13 22:05:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:48,378 INFO L462 AbstractCegarLoop]: Abstraction has 1329 states and 1785 transitions. [2019-10-13 22:05:48,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:05:48,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1785 transitions. [2019-10-13 22:05:48,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 22:05:48,386 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:48,387 INFO L380 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] [2019-10-13 22:05:48,387 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:48,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:48,388 INFO L82 PathProgramCache]: Analyzing trace with hash -266816140, now seen corresponding path program 1 times [2019-10-13 22:05:48,388 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:48,389 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718419457] [2019-10-13 22:05:48,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:48,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:48,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 22:05:48,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718419457] [2019-10-13 22:05:48,727 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:05:48,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:05:48,728 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111871988] [2019-10-13 22:05:48,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:05:48,728 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:48,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:05:48,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:48,729 INFO L87 Difference]: Start difference. First operand 1329 states and 1785 transitions. Second operand 3 states. [2019-10-13 22:05:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:48,799 INFO L93 Difference]: Finished difference Result 2652 states and 3618 transitions. [2019-10-13 22:05:48,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:05:48,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2019-10-13 22:05:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:48,810 INFO L225 Difference]: With dead ends: 2652 [2019-10-13 22:05:48,810 INFO L226 Difference]: Without dead ends: 1341 [2019-10-13 22:05:48,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:05:48,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2019-10-13 22:05:48,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1333. [2019-10-13 22:05:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2019-10-13 22:05:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1789 transitions. [2019-10-13 22:05:48,887 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1789 transitions. Word has length 237 [2019-10-13 22:05:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:48,888 INFO L462 AbstractCegarLoop]: Abstraction has 1333 states and 1789 transitions. [2019-10-13 22:05:48,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:05:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1789 transitions. [2019-10-13 22:05:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2019-10-13 22:05:48,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:48,894 INFO L380 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] [2019-10-13 22:05:48,894 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:48,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:48,895 INFO L82 PathProgramCache]: Analyzing trace with hash 276739494, now seen corresponding path program 1 times [2019-10-13 22:05:48,895 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:48,895 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006986799] [2019-10-13 22:05:48,895 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:48,895 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:48,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-10-13 22:05:49,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006986799] [2019-10-13 22:05:49,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728041859] [2019-10-13 22:05:49,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:05:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:50,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 3465 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 22:05:50,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:05:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-10-13 22:05:50,518 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:05:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-10-13 22:05:51,457 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 22:05:51,457 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 12 [2019-10-13 22:05:51,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119597161] [2019-10-13 22:05:51,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:05:51,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:05:51,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:05:51,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 22:05:51,459 INFO L87 Difference]: Start difference. First operand 1333 states and 1789 transitions. Second operand 4 states. [2019-10-13 22:05:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:05:51,567 INFO L93 Difference]: Finished difference Result 2656 states and 3572 transitions. [2019-10-13 22:05:51,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:05:51,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2019-10-13 22:05:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:05:51,580 INFO L225 Difference]: With dead ends: 2656 [2019-10-13 22:05:51,581 INFO L226 Difference]: Without dead ends: 1341 [2019-10-13 22:05:51,592 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 22:05:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2019-10-13 22:05:51,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2019-10-13 22:05:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2019-10-13 22:05:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1799 transitions. [2019-10-13 22:05:51,803 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1799 transitions. Word has length 308 [2019-10-13 22:05:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:05:51,803 INFO L462 AbstractCegarLoop]: Abstraction has 1341 states and 1799 transitions. [2019-10-13 22:05:51,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:05:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1799 transitions. [2019-10-13 22:05:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2019-10-13 22:05:51,810 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:05:51,810 INFO L380 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] [2019-10-13 22:05:52,022 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:05:52,023 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:05:52,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:05:52,023 INFO L82 PathProgramCache]: Analyzing trace with hash 570082696, now seen corresponding path program 1 times [2019-10-13 22:05:52,024 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:05:52,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265024243] [2019-10-13 22:05:52,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:52,025 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:05:52,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:05:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2019-10-13 22:05:52,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265024243] [2019-10-13 22:05:52,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462789621] [2019-10-13 22:05:52,433 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 [2019-10-13 22:05:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:05:53,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 22:05:53,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:05:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2019-10-13 22:05:53,523 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:05:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2019-10-13 22:05:54,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1498820907] [2019-10-13 22:05:54,486 INFO L162 IcfgInterpreter]: Started Sifa with 202 locations of interest [2019-10-13 22:05:54,486 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:05:54,494 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:05:54,503 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:05:54,504 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:05:56,711 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 1380