/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:38:20,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:38:20,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:38:20,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:38:20,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:38:20,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:38:20,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:38:20,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:38:20,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:38:20,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:38:20,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:38:20,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:38:20,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:38:20,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:38:20,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:38:20,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:38:20,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:38:20,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:38:20,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:38:20,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:38:20,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:38:20,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:38:20,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:38:20,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:38:20,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 03:38:20,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 03:38:20,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 03:38:20,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 03:38:20,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 03:38:20,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 03:38:20,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 03:38:20,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 03:38:20,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 03:38:20,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 03:38:20,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 03:38:20,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 03:38:20,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 03:38:20,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 03:38:20,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:38:20,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:38:20,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:38:20,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 03:38:20,660 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:38:20,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:38:20,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:38:20,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:38:20,662 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:38:20,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:38:20,662 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:38:20,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:38:20,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:38:20,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:38:20,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:38:20,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:38:20,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:38:20,664 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:38:20,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:38:20,664 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:38:20,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:38:20,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:38:20,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:38:20,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:38:20,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:38:20,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:38:20,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:38:20,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:38:20,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:38:20,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:38:20,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:38:20,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:38:20,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 03:38:20,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:38:20,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:38:20,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:38:20,979 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:38:20,980 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:38:20,980 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-11-07 03:38:21,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/128c21324/ea61d5d6bd344e15a90d1031b7084201/FLAG87e7811c4 [2019-11-07 03:38:21,765 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:38:21,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-11-07 03:38:21,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/128c21324/ea61d5d6bd344e15a90d1031b7084201/FLAG87e7811c4 [2019-11-07 03:38:21,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/128c21324/ea61d5d6bd344e15a90d1031b7084201 [2019-11-07 03:38:21,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:38:21,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:38:21,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:38:21,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:38:21,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:38:21,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:38:21" (1/1) ... [2019-11-07 03:38:21,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85f46fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:21, skipping insertion in model container [2019-11-07 03:38:21,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:38:21" (1/1) ... [2019-11-07 03:38:21,913 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:38:22,017 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:38:23,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:38:23,128 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:38:23,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:38:23,416 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:38:23,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:23 WrapperNode [2019-11-07 03:38:23,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:38:23,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:38:23,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:38:23,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:38:23,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:23" (1/1) ... [2019-11-07 03:38:23,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:23" (1/1) ... [2019-11-07 03:38:23,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:23" (1/1) ... [2019-11-07 03:38:23,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:23" (1/1) ... [2019-11-07 03:38:23,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:23" (1/1) ... [2019-11-07 03:38:23,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:23" (1/1) ... [2019-11-07 03:38:23,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:23" (1/1) ... [2019-11-07 03:38:23,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:38:23,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:38:23,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:38:23,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:38:23,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:38:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:38:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:38:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2019-11-07 03:38:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-11-07 03:38:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-11-07 03:38:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2019-11-07 03:38:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-11-07 03:38:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-11-07 03:38:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-11-07 03:38:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-11-07 03:38:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2019-11-07 03:38:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 03:38:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 03:38:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-11-07 03:38:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-11-07 03:38:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 03:38:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 03:38:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 03:38:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 03:38:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 03:38:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-07 03:38:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_select_wdt_out [2019-11-07 03:38:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_swc [2019-11-07 03:38:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_get_swc_base_addr [2019-11-07 03:38:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_swc_bank3 [2019-11-07 03:38:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_programm_wdto [2019-11-07 03:38:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_wden [2019-11-07 03:38:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_sw_wd_tren [2019-11-07 03:38:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable_sw_wd_tren [2019-11-07 03:38:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_sw_wd_trg [2019-11-07 03:38:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable_sw_wd_trg [2019-11-07 03:38:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable [2019-11-07 03:38:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable [2019-11-07 03:38:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_refresh [2019-11-07 03:38:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_open [2019-11-07 03:38:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_release [2019-11-07 03:38:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_status [2019-11-07 03:38:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_write [2019-11-07 03:38:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_ioctl [2019-11-07 03:38:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_notify_sys [2019-11-07 03:38:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_init [2019-11-07 03:38:23,714 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_exit [2019-11-07 03:38:23,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2019-11-07 03:38:23,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:38:23,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___module_get_5 [2019-11-07 03:38:23,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonseekable_open_6 [2019-11-07 03:38:23,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_register_7 [2019-11-07 03:38:23,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_8 [2019-11-07 03:38:23,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_9 [2019-11-07 03:38:23,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 03:38:23,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-07 03:38:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-07 03:38:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-07 03:38:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-07 03:38:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-11-07 03:38:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-11-07 03:38:23,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-11-07 03:38:23,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-11-07 03:38:23,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-11-07 03:38:23,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 03:38:23,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-11-07 03:38:23,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2019-11-07 03:38:23,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-11-07 03:38:23,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-11-07 03:38:23,720 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-07 03:38:23,720 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-11-07 03:38:23,720 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-11-07 03:38:23,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 03:38:23,721 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2019-11-07 03:38:23,721 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_register [2019-11-07 03:38:23,721 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2019-11-07 03:38:23,722 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 03:38:23,722 INFO L138 BoogieDeclarations]: Found implementation of procedure register_reboot_notifier [2019-11-07 03:38:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2019-11-07 03:38:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 03:38:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 03:38:23,724 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-07 03:38:23,724 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 03:38:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:38:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 03:38:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-11-07 03:38:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-11-07 03:38:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 03:38:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2019-11-07 03:38:23,728 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-07 03:38:23,728 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2019-11-07 03:38:23,728 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2019-11-07 03:38:23,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:38:23,729 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-11-07 03:38:23,730 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-11-07 03:38:23,730 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-11-07 03:38:23,730 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-11-07 03:38:23,730 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-11-07 03:38:23,730 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-11-07 03:38:23,730 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-11-07 03:38:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-11-07 03:38:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2019-11-07 03:38:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___module_get_5 [2019-11-07 03:38:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-11-07 03:38:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 03:38:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 03:38:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:38:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 03:38:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 03:38:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 03:38:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 03:38:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 03:38:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 03:38:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 03:38:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-11-07 03:38:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-11-07 03:38:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-07 03:38:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 03:38:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 03:38:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 03:38:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 03:38:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2019-11-07 03:38:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure misc_register [2019-11-07 03:38:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_register_7 [2019-11-07 03:38:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2019-11-07 03:38:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_8 [2019-11-07 03:38:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_9 [2019-11-07 03:38:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2019-11-07 03:38:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonseekable_open_6 [2019-11-07 03:38:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure register_reboot_notifier [2019-11-07 03:38:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2019-11-07 03:38:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-07 03:38:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-11-07 03:38:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-07 03:38:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:38:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_select_wdt_out [2019-11-07 03:38:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_swc [2019-11-07 03:38:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_get_swc_base_addr [2019-11-07 03:38:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_swc_bank3 [2019-11-07 03:38:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_programm_wdto [2019-11-07 03:38:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_wden [2019-11-07 03:38:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_sw_wd_tren [2019-11-07 03:38:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable_sw_wd_tren [2019-11-07 03:38:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_sw_wd_trg [2019-11-07 03:38:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable_sw_wd_trg [2019-11-07 03:38:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable [2019-11-07 03:38:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable [2019-11-07 03:38:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_refresh [2019-11-07 03:38:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_open [2019-11-07 03:38:23,752 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_release [2019-11-07 03:38:23,752 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_status [2019-11-07 03:38:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_write [2019-11-07 03:38:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_ioctl [2019-11-07 03:38:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:38:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:38:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:38:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_notify_sys [2019-11-07 03:38:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_init [2019-11-07 03:38:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_exit [2019-11-07 03:38:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 03:38:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 03:38:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:38:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:38:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 03:38:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-07 03:38:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-07 03:38:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-07 03:38:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-07 03:38:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-11-07 03:38:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-11-07 03:38:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-11-07 03:38:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-11-07 03:38:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 03:38:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-07 03:38:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 03:38:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 03:38:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:38:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 03:38:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 03:38:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:38:24,645 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 03:38:25,422 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-11-07 03:38:28,488 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:38:28,488 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 03:38:28,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:38:28 BoogieIcfgContainer [2019-11-07 03:38:28,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:38:28,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:38:28,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:38:28,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:38:28,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:38:21" (1/3) ... [2019-11-07 03:38:28,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5a13ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:38:28, skipping insertion in model container [2019-11-07 03:38:28,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:23" (2/3) ... [2019-11-07 03:38:28,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5a13ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:38:28, skipping insertion in model container [2019-11-07 03:38:28,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:38:28" (3/3) ... [2019-11-07 03:38:28,500 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-11-07 03:38:28,513 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:38:28,523 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:38:28,532 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:38:28,558 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:38:28,558 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:38:28,559 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:38:28,559 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:38:28,559 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:38:28,559 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:38:28,559 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:38:28,559 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:38:28,600 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states. [2019-11-07 03:38:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 03:38:28,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:38:28,616 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:38:28,618 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:38:28,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:38:28,625 INFO L82 PathProgramCache]: Analyzing trace with hash -245972114, now seen corresponding path program 1 times [2019-11-07 03:38:28,637 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:38:28,637 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071048448] [2019-11-07 03:38:28,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:38:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-11-07 03:38:29,260 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071048448] [2019-11-07 03:38:29,261 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:38:29,261 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:38:29,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084301585] [2019-11-07 03:38:29,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:38:29,268 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:38:29,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:38:29,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:38:29,285 INFO L87 Difference]: Start difference. First operand 419 states. Second operand 3 states. [2019-11-07 03:38:29,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:38:29,460 INFO L93 Difference]: Finished difference Result 1152 states and 1514 transitions. [2019-11-07 03:38:29,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:38:29,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-11-07 03:38:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:38:29,491 INFO L225 Difference]: With dead ends: 1152 [2019-11-07 03:38:29,491 INFO L226 Difference]: Without dead ends: 741 [2019-11-07 03:38:29,507 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:38:29,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2019-11-07 03:38:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 737. [2019-11-07 03:38:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2019-11-07 03:38:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 958 transitions. [2019-11-07 03:38:29,706 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 958 transitions. Word has length 120 [2019-11-07 03:38:29,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:38:29,708 INFO L462 AbstractCegarLoop]: Abstraction has 737 states and 958 transitions. [2019-11-07 03:38:29,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:38:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 958 transitions. [2019-11-07 03:38:29,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-11-07 03:38:29,729 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:38:29,730 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 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] [2019-11-07 03:38:29,730 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:38:29,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:38:29,732 INFO L82 PathProgramCache]: Analyzing trace with hash -141493757, now seen corresponding path program 1 times [2019-11-07 03:38:29,732 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:38:29,733 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107627208] [2019-11-07 03:38:29,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:38:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-11-07 03:38:30,153 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107627208] [2019-11-07 03:38:30,153 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:38:30,153 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:38:30,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912112355] [2019-11-07 03:38:30,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:38:30,156 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:38:30,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:38:30,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:38:30,157 INFO L87 Difference]: Start difference. First operand 737 states and 958 transitions. Second operand 3 states. [2019-11-07 03:38:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:38:30,314 INFO L93 Difference]: Finished difference Result 1692 states and 2170 transitions. [2019-11-07 03:38:30,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:38:30,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2019-11-07 03:38:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:38:30,331 INFO L225 Difference]: With dead ends: 1692 [2019-11-07 03:38:30,331 INFO L226 Difference]: Without dead ends: 990 [2019-11-07 03:38:30,336 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:38:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2019-11-07 03:38:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 964. [2019-11-07 03:38:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-11-07 03:38:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1228 transitions. [2019-11-07 03:38:30,486 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1228 transitions. Word has length 320 [2019-11-07 03:38:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:38:30,491 INFO L462 AbstractCegarLoop]: Abstraction has 964 states and 1228 transitions. [2019-11-07 03:38:30,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:38:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1228 transitions. [2019-11-07 03:38:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2019-11-07 03:38:30,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:38:30,504 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:38:30,505 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:38:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:38:30,505 INFO L82 PathProgramCache]: Analyzing trace with hash -170760376, now seen corresponding path program 1 times [2019-11-07 03:38:30,506 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:38:30,506 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202303715] [2019-11-07 03:38:30,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:38:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2019-11-07 03:38:30,913 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202303715] [2019-11-07 03:38:30,913 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629283421] [2019-11-07 03:38:30,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:38:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:31,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 03:38:31,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:38:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2019-11-07 03:38:31,756 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:38:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2019-11-07 03:38:32,601 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 03:38:32,602 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6] total 10 [2019-11-07 03:38:32,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520282504] [2019-11-07 03:38:32,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 03:38:32,605 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:38:32,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 03:38:32,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-07 03:38:32,606 INFO L87 Difference]: Start difference. First operand 964 states and 1228 transitions. Second operand 6 states. [2019-11-07 03:38:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:38:33,033 INFO L93 Difference]: Finished difference Result 1919 states and 2427 transitions. [2019-11-07 03:38:33,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 03:38:33,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 383 [2019-11-07 03:38:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:38:33,041 INFO L225 Difference]: With dead ends: 1919 [2019-11-07 03:38:33,041 INFO L226 Difference]: Without dead ends: 893 [2019-11-07 03:38:33,046 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-07 03:38:33,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2019-11-07 03:38:33,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 887. [2019-11-07 03:38:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2019-11-07 03:38:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1114 transitions. [2019-11-07 03:38:33,100 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1114 transitions. Word has length 383 [2019-11-07 03:38:33,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:38:33,101 INFO L462 AbstractCegarLoop]: Abstraction has 887 states and 1114 transitions. [2019-11-07 03:38:33,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 03:38:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1114 transitions. [2019-11-07 03:38:33,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2019-11-07 03:38:33,110 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:38:33,111 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:38:33,327 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:38:33,327 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:38:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:38:33,328 INFO L82 PathProgramCache]: Analyzing trace with hash 250780050, now seen corresponding path program 1 times [2019-11-07 03:38:33,328 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:38:33,328 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772972120] [2019-11-07 03:38:33,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:38:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2019-11-07 03:38:33,637 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772972120] [2019-11-07 03:38:33,638 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:38:33,638 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 03:38:33,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005330417] [2019-11-07 03:38:33,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 03:38:33,639 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:38:33,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 03:38:33,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 03:38:33,640 INFO L87 Difference]: Start difference. First operand 887 states and 1114 transitions. Second operand 6 states. [2019-11-07 03:38:33,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:38:33,755 INFO L93 Difference]: Finished difference Result 1499 states and 1904 transitions. [2019-11-07 03:38:33,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 03:38:33,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2019-11-07 03:38:33,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:38:33,761 INFO L225 Difference]: With dead ends: 1499 [2019-11-07 03:38:33,761 INFO L226 Difference]: Without dead ends: 881 [2019-11-07 03:38:33,763 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 03:38:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-11-07 03:38:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2019-11-07 03:38:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2019-11-07 03:38:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1106 transitions. [2019-11-07 03:38:33,803 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1106 transitions. Word has length 387 [2019-11-07 03:38:33,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:38:33,803 INFO L462 AbstractCegarLoop]: Abstraction has 881 states and 1106 transitions. [2019-11-07 03:38:33,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 03:38:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1106 transitions. [2019-11-07 03:38:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2019-11-07 03:38:33,821 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:38:33,822 INFO L410 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:38:33,822 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:38:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:38:33,823 INFO L82 PathProgramCache]: Analyzing trace with hash -883959940, now seen corresponding path program 1 times [2019-11-07 03:38:33,823 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:38:33,823 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815415694] [2019-11-07 03:38:33,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:38:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3431 trivial. 0 not checked. [2019-11-07 03:38:34,339 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815415694] [2019-11-07 03:38:34,339 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:38:34,339 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 03:38:34,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74649095] [2019-11-07 03:38:34,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 03:38:34,341 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:38:34,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 03:38:34,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 03:38:34,342 INFO L87 Difference]: Start difference. First operand 881 states and 1106 transitions. Second operand 7 states. [2019-11-07 03:38:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:38:34,524 INFO L93 Difference]: Finished difference Result 1781 states and 2270 transitions. [2019-11-07 03:38:34,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 03:38:34,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 687 [2019-11-07 03:38:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:38:34,534 INFO L225 Difference]: With dead ends: 1781 [2019-11-07 03:38:34,534 INFO L226 Difference]: Without dead ends: 1173 [2019-11-07 03:38:34,539 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 03:38:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2019-11-07 03:38:34,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1166. [2019-11-07 03:38:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2019-11-07 03:38:34,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1463 transitions. [2019-11-07 03:38:34,602 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1463 transitions. Word has length 687 [2019-11-07 03:38:34,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:38:34,603 INFO L462 AbstractCegarLoop]: Abstraction has 1166 states and 1463 transitions. [2019-11-07 03:38:34,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 03:38:34,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1463 transitions. [2019-11-07 03:38:34,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2019-11-07 03:38:34,611 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:38:34,612 INFO L410 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:38:34,612 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:38:34,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:38:34,613 INFO L82 PathProgramCache]: Analyzing trace with hash -870164457, now seen corresponding path program 1 times [2019-11-07 03:38:34,613 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:38:34,613 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260244030] [2019-11-07 03:38:34,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:38:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3439 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3431 trivial. 0 not checked. [2019-11-07 03:38:35,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260244030] [2019-11-07 03:38:35,775 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615436679] [2019-11-07 03:38:35,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:38:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:36,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 03:38:36,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:38:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3439 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2019-11-07 03:38:36,880 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:38:36,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:38:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3431 trivial. 0 not checked. [2019-11-07 03:38:38,498 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 03:38:38,498 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [8] total 17 [2019-11-07 03:38:38,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590413365] [2019-11-07 03:38:38,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 03:38:38,500 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:38:38,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 03:38:38,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-11-07 03:38:38,501 INFO L87 Difference]: Start difference. First operand 1166 states and 1463 transitions. Second operand 12 states. [2019-11-07 03:38:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:38:41,537 INFO L93 Difference]: Finished difference Result 2560 states and 3242 transitions. [2019-11-07 03:38:41,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 03:38:41,538 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 682 [2019-11-07 03:38:41,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:38:41,554 INFO L225 Difference]: With dead ends: 2560 [2019-11-07 03:38:41,554 INFO L226 Difference]: Without dead ends: 2476 [2019-11-07 03:38:41,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1371 GetRequests, 1355 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-11-07 03:38:41,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2019-11-07 03:38:41,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2250. [2019-11-07 03:38:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2019-11-07 03:38:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2858 transitions. [2019-11-07 03:38:41,673 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2858 transitions. Word has length 682 [2019-11-07 03:38:41,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:38:41,674 INFO L462 AbstractCegarLoop]: Abstraction has 2250 states and 2858 transitions. [2019-11-07 03:38:41,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 03:38:41,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2858 transitions. [2019-11-07 03:38:41,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2019-11-07 03:38:41,687 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:38:41,688 INFO L410 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:38:41,889 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:38:41,889 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:38:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:38:41,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1469004023, now seen corresponding path program 1 times [2019-11-07 03:38:41,891 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:38:41,891 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392488266] [2019-11-07 03:38:41,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:38:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4820 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4809 trivial. 0 not checked. [2019-11-07 03:38:42,735 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392488266] [2019-11-07 03:38:42,736 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:38:42,736 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 03:38:42,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421412786] [2019-11-07 03:38:42,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 03:38:42,738 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:38:42,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 03:38:42,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 03:38:42,738 INFO L87 Difference]: Start difference. First operand 2250 states and 2858 transitions. Second operand 5 states. [2019-11-07 03:38:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:38:51,059 INFO L93 Difference]: Finished difference Result 7020 states and 9051 transitions. [2019-11-07 03:38:51,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 03:38:51,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 801 [2019-11-07 03:38:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:38:51,101 INFO L225 Difference]: With dead ends: 7020 [2019-11-07 03:38:51,102 INFO L226 Difference]: Without dead ends: 5043 [2019-11-07 03:38:51,114 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-07 03:38:51,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5043 states. [2019-11-07 03:38:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5043 to 4600. [2019-11-07 03:38:51,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4600 states. [2019-11-07 03:38:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 5834 transitions. [2019-11-07 03:38:51,428 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 5834 transitions. Word has length 801 [2019-11-07 03:38:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:38:51,429 INFO L462 AbstractCegarLoop]: Abstraction has 4600 states and 5834 transitions. [2019-11-07 03:38:51,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 03:38:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 5834 transitions. [2019-11-07 03:38:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2019-11-07 03:38:51,465 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:38:51,466 INFO L410 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:38:51,466 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:38:51,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:38:51,467 INFO L82 PathProgramCache]: Analyzing trace with hash -21587811, now seen corresponding path program 1 times [2019-11-07 03:38:51,471 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:38:51,471 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920509220] [2019-11-07 03:38:51,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:38:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6028 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 6007 trivial. 0 not checked. [2019-11-07 03:38:52,450 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920509220] [2019-11-07 03:38:52,451 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:38:52,451 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:38:52,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63619869] [2019-11-07 03:38:52,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:38:52,452 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:38:52,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:38:52,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:38:52,453 INFO L87 Difference]: Start difference. First operand 4600 states and 5834 transitions. Second operand 3 states. [2019-11-07 03:38:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:38:52,673 INFO L93 Difference]: Finished difference Result 9715 states and 12352 transitions. [2019-11-07 03:38:52,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:38:52,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 866 [2019-11-07 03:38:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:38:52,706 INFO L225 Difference]: With dead ends: 9715 [2019-11-07 03:38:52,706 INFO L226 Difference]: Without dead ends: 5388 [2019-11-07 03:38:52,722 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:38:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5388 states. [2019-11-07 03:38:52,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5388 to 5374. [2019-11-07 03:38:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5374 states. [2019-11-07 03:38:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 6770 transitions. [2019-11-07 03:38:53,006 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 6770 transitions. Word has length 866 [2019-11-07 03:38:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:38:53,007 INFO L462 AbstractCegarLoop]: Abstraction has 5374 states and 6770 transitions. [2019-11-07 03:38:53,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:38:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 6770 transitions. [2019-11-07 03:38:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2019-11-07 03:38:53,028 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:38:53,030 INFO L410 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:38:53,030 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:38:53,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:38:53,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1812495261, now seen corresponding path program 2 times [2019-11-07 03:38:53,031 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:38:53,031 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322755234] [2019-11-07 03:38:53,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:38:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:38:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6028 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6003 trivial. 0 not checked. [2019-11-07 03:38:54,778 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322755234] [2019-11-07 03:38:54,778 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846137534] [2019-11-07 03:38:54,778 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true