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 0.1.24-13a467a-m [2019-10-15 02:49:28,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:49:28,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:49:28,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:49:28,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:49:28,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:49:28,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:49:28,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:49:28,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:49:28,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:49:28,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:49:28,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:49:28,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:49:28,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:49:28,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:49:28,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:49:28,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:49:28,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:49:28,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:49:28,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:49:28,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:49:28,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:49:28,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:49:28,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:49:28,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:49:28,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:49:28,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:49:28,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:49:28,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:49:28,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:49:28,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:49:28,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:49:28,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:49:28,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:49:28,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:49:28,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:49:28,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:49:28,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:49:28,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:49:28,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:49:28,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:49:28,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 02:49:28,150 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:49:28,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:49:28,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:49:28,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:49:28,154 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:49:28,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:49:28,158 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:49:28,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:49:28,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:49:28,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:49:28,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:49:28,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:49:28,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:49:28,159 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:49:28,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:49:28,159 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:49:28,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:49:28,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:49:28,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:49:28,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:49:28,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:49:28,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:49:28,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:49:28,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:49:28,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:49:28,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:49:28,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:49:28,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:49:28,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:49:28,428 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:49:28,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:49:28,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:49:28,456 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:49:28,457 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:49:28,458 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-10-15 02:49:28,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac399a343/9512b9964ae04ebeb8dcc0603bb9b695/FLAG9a45a24f7 [2019-10-15 02:49:29,289 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:49:29,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-10-15 02:49:29,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac399a343/9512b9964ae04ebeb8dcc0603bb9b695/FLAG9a45a24f7 [2019-10-15 02:49:29,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac399a343/9512b9964ae04ebeb8dcc0603bb9b695 [2019-10-15 02:49:29,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:49:29,410 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:49:29,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:49:29,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:49:29,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:49:29,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:49:29" (1/1) ... [2019-10-15 02:49:29,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610275df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:29, skipping insertion in model container [2019-10-15 02:49:29,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:49:29" (1/1) ... [2019-10-15 02:49:29,426 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:49:29,527 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:49:30,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:49:30,635 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:49:30,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:49:30,959 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:49:30,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:30 WrapperNode [2019-10-15 02:49:30,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:49:30,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:49:30,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:49:30,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:49:30,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:30" (1/1) ... [2019-10-15 02:49:30,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:30" (1/1) ... [2019-10-15 02:49:31,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:30" (1/1) ... [2019-10-15 02:49:31,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:30" (1/1) ... [2019-10-15 02:49:31,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:30" (1/1) ... [2019-10-15 02:49:31,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:30" (1/1) ... [2019-10-15 02:49:31,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:30" (1/1) ... [2019-10-15 02:49:31,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:49:31,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:49:31,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:49:31,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:49:31,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:49:31,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:49:31,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:49:31,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2019-10-15 02:49:31,241 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-15 02:49:31,241 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-15 02:49:31,242 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2019-10-15 02:49:31,243 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-15 02:49:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-15 02:49:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-10-15 02:49:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-10-15 02:49:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2019-10-15 02:49:31,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 02:49:31,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 02:49:31,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-15 02:49:31,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-15 02:49:31,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 02:49:31,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 02:49:31,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 02:49:31,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 02:49:31,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 02:49:31,252 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-15 02:49:31,252 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_select_wdt_out [2019-10-15 02:49:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_swc [2019-10-15 02:49:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_get_swc_base_addr [2019-10-15 02:49:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_swc_bank3 [2019-10-15 02:49:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_programm_wdto [2019-10-15 02:49:31,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_wden [2019-10-15 02:49:31,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_sw_wd_tren [2019-10-15 02:49:31,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable_sw_wd_tren [2019-10-15 02:49:31,255 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_sw_wd_trg [2019-10-15 02:49:31,255 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable_sw_wd_trg [2019-10-15 02:49:31,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable [2019-10-15 02:49:31,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable [2019-10-15 02:49:31,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_refresh [2019-10-15 02:49:31,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_open [2019-10-15 02:49:31,257 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_release [2019-10-15 02:49:31,257 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_status [2019-10-15 02:49:31,258 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_write [2019-10-15 02:49:31,259 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_ioctl [2019-10-15 02:49:31,259 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_notify_sys [2019-10-15 02:49:31,259 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_init [2019-10-15 02:49:31,259 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_exit [2019-10-15 02:49:31,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2019-10-15 02:49:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:49:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___module_get_5 [2019-10-15 02:49:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonseekable_open_6 [2019-10-15 02:49:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_register_7 [2019-10-15 02:49:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_8 [2019-10-15 02:49:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_9 [2019-10-15 02:49:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 02:49:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-15 02:49:31,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-15 02:49:31,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-15 02:49:31,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-15 02:49:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-10-15 02:49:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-10-15 02:49:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-10-15 02:49:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-10-15 02:49:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-10-15 02:49:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 02:49:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-15 02:49:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2019-10-15 02:49:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-10-15 02:49:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-10-15 02:49:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-15 02:49:31,267 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-15 02:49:31,267 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-15 02:49:31,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 02:49:31,267 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2019-10-15 02:49:31,268 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_register [2019-10-15 02:49:31,268 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2019-10-15 02:49:31,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 02:49:31,269 INFO L138 BoogieDeclarations]: Found implementation of procedure register_reboot_notifier [2019-10-15 02:49:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2019-10-15 02:49:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 02:49:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 02:49:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 02:49:31,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 02:49:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:49:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 02:49:31,274 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-15 02:49:31,274 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-15 02:49:31,274 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 02:49:31,274 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2019-10-15 02:49:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 02:49:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2019-10-15 02:49:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2019-10-15 02:49:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:49:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-15 02:49:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-15 02:49:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-15 02:49:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-15 02:49:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-10-15 02:49:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-10-15 02:49:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-10-15 02:49:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-10-15 02:49:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2019-10-15 02:49:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___module_get_5 [2019-10-15 02:49:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-10-15 02:49:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:49:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:49:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:49:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 02:49:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:49:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 02:49:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 02:49:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:49:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 02:49:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 02:49:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-15 02:49:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-15 02:49:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 02:49:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 02:49:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 02:49:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 02:49:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 02:49:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2019-10-15 02:49:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure misc_register [2019-10-15 02:49:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_register_7 [2019-10-15 02:49:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2019-10-15 02:49:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_8 [2019-10-15 02:49:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_9 [2019-10-15 02:49:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2019-10-15 02:49:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonseekable_open_6 [2019-10-15 02:49:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure register_reboot_notifier [2019-10-15 02:49:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2019-10-15 02:49:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-15 02:49:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-15 02:49:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-15 02:49:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:49:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_select_wdt_out [2019-10-15 02:49:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_swc [2019-10-15 02:49:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_get_swc_base_addr [2019-10-15 02:49:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_swc_bank3 [2019-10-15 02:49:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_programm_wdto [2019-10-15 02:49:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_wden [2019-10-15 02:49:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_sw_wd_tren [2019-10-15 02:49:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable_sw_wd_tren [2019-10-15 02:49:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_sw_wd_trg [2019-10-15 02:49:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable_sw_wd_trg [2019-10-15 02:49:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable [2019-10-15 02:49:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable [2019-10-15 02:49:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_refresh [2019-10-15 02:49:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_open [2019-10-15 02:49:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_release [2019-10-15 02:49:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_status [2019-10-15 02:49:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_write [2019-10-15 02:49:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_ioctl [2019-10-15 02:49:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:49:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:49:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:49:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_notify_sys [2019-10-15 02:49:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_init [2019-10-15 02:49:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_exit [2019-10-15 02:49:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 02:49:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 02:49:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:49:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:49:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 02:49:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-15 02:49:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-15 02:49:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-15 02:49:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-15 02:49:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-10-15 02:49:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-10-15 02:49:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-10-15 02:49:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-10-15 02:49:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 02:49:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-15 02:49:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:49:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 02:49:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:49:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:49:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:49:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:49:31,953 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 02:49:32,724 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-10-15 02:49:35,873 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:49:35,873 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 02:49:35,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:49:35 BoogieIcfgContainer [2019-10-15 02:49:35,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:49:35,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:49:35,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:49:35,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:49:35,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:49:29" (1/3) ... [2019-10-15 02:49:35,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa9dd2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:49:35, skipping insertion in model container [2019-10-15 02:49:35,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:49:30" (2/3) ... [2019-10-15 02:49:35,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa9dd2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:49:35, skipping insertion in model container [2019-10-15 02:49:35,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:49:35" (3/3) ... [2019-10-15 02:49:35,883 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-10-15 02:49:35,893 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:49:35,903 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:49:35,915 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:49:35,956 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:49:35,956 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:49:35,957 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:49:35,957 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:49:35,957 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:49:35,957 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:49:35,957 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:49:35,957 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:49:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states. [2019-10-15 02:49:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 02:49:36,016 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:49:36,017 INFO L380 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] [2019-10-15 02:49:36,019 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:49:36,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:49:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash -245972114, now seen corresponding path program 1 times [2019-10-15 02:49:36,034 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:49:36,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869915768] [2019-10-15 02:49:36,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:36,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:36,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:49:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:49:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-10-15 02:49:36,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869915768] [2019-10-15 02:49:36,857 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:49:36,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:49:36,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620915905] [2019-10-15 02:49:36,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:49:36,863 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:49:36,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:49:36,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:49:36,880 INFO L87 Difference]: Start difference. First operand 419 states. Second operand 3 states. [2019-10-15 02:49:37,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:49:37,036 INFO L93 Difference]: Finished difference Result 1152 states and 1514 transitions. [2019-10-15 02:49:37,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:49:37,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-10-15 02:49:37,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:49:37,066 INFO L225 Difference]: With dead ends: 1152 [2019-10-15 02:49:37,066 INFO L226 Difference]: Without dead ends: 741 [2019-10-15 02:49:37,080 INFO L600 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 [2019-10-15 02:49:37,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2019-10-15 02:49:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 737. [2019-10-15 02:49:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2019-10-15 02:49:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 958 transitions. [2019-10-15 02:49:37,320 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 958 transitions. Word has length 120 [2019-10-15 02:49:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:49:37,322 INFO L462 AbstractCegarLoop]: Abstraction has 737 states and 958 transitions. [2019-10-15 02:49:37,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:49:37,323 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 958 transitions. [2019-10-15 02:49:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-10-15 02:49:37,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:49:37,346 INFO L380 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] [2019-10-15 02:49:37,346 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:49:37,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:49:37,347 INFO L82 PathProgramCache]: Analyzing trace with hash -141493757, now seen corresponding path program 1 times [2019-10-15 02:49:37,347 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:49:37,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931562880] [2019-10-15 02:49:37,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:37,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:37,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:49:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:49:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-10-15 02:49:37,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931562880] [2019-10-15 02:49:37,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:49:37,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:49:37,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963253461] [2019-10-15 02:49:37,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:49:37,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:49:37,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:49:37,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:49:37,763 INFO L87 Difference]: Start difference. First operand 737 states and 958 transitions. Second operand 3 states. [2019-10-15 02:49:37,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:49:37,950 INFO L93 Difference]: Finished difference Result 1692 states and 2170 transitions. [2019-10-15 02:49:37,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:49:37,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2019-10-15 02:49:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:49:37,968 INFO L225 Difference]: With dead ends: 1692 [2019-10-15 02:49:37,969 INFO L226 Difference]: Without dead ends: 990 [2019-10-15 02:49:37,973 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:49:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2019-10-15 02:49:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 964. [2019-10-15 02:49:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-10-15 02:49:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1228 transitions. [2019-10-15 02:49:38,053 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1228 transitions. Word has length 320 [2019-10-15 02:49:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:49:38,053 INFO L462 AbstractCegarLoop]: Abstraction has 964 states and 1228 transitions. [2019-10-15 02:49:38,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:49:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1228 transitions. [2019-10-15 02:49:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2019-10-15 02:49:38,066 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:49:38,066 INFO L380 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] [2019-10-15 02:49:38,066 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:49:38,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:49:38,067 INFO L82 PathProgramCache]: Analyzing trace with hash -170760376, now seen corresponding path program 1 times [2019-10-15 02:49:38,067 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:49:38,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885114348] [2019-10-15 02:49:38,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:38,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:38,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:49:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:49:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2019-10-15 02:49:38,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885114348] [2019-10-15 02:49:38,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845720521] [2019-10-15 02:49:38,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:49:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:49:39,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 02:49:39,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:49:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2019-10-15 02:49:39,695 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:49:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2019-10-15 02:49:40,538 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 02:49:40,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6] total 10 [2019-10-15 02:49:40,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354431716] [2019-10-15 02:49:40,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 02:49:40,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:49:40,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 02:49:40,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-15 02:49:40,542 INFO L87 Difference]: Start difference. First operand 964 states and 1228 transitions. Second operand 6 states. [2019-10-15 02:49:41,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:49:41,027 INFO L93 Difference]: Finished difference Result 1919 states and 2427 transitions. [2019-10-15 02:49:41,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:49:41,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 383 [2019-10-15 02:49:41,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:49:41,035 INFO L225 Difference]: With dead ends: 1919 [2019-10-15 02:49:41,035 INFO L226 Difference]: Without dead ends: 893 [2019-10-15 02:49:41,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-15 02:49:41,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2019-10-15 02:49:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 887. [2019-10-15 02:49:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2019-10-15 02:49:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1114 transitions. [2019-10-15 02:49:41,089 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1114 transitions. Word has length 383 [2019-10-15 02:49:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:49:41,090 INFO L462 AbstractCegarLoop]: Abstraction has 887 states and 1114 transitions. [2019-10-15 02:49:41,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 02:49:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1114 transitions. [2019-10-15 02:49:41,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2019-10-15 02:49:41,100 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:49:41,100 INFO L380 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] [2019-10-15 02:49:41,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:49:41,302 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:49:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:49:41,302 INFO L82 PathProgramCache]: Analyzing trace with hash 250780050, now seen corresponding path program 1 times [2019-10-15 02:49:41,303 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:49:41,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611685308] [2019-10-15 02:49:41,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:41,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:41,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:49:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:49:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2019-10-15 02:49:41,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611685308] [2019-10-15 02:49:41,618 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:49:41,618 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 02:49:41,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711759449] [2019-10-15 02:49:41,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 02:49:41,622 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:49:41,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 02:49:41,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:49:41,622 INFO L87 Difference]: Start difference. First operand 887 states and 1114 transitions. Second operand 6 states. [2019-10-15 02:49:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:49:41,731 INFO L93 Difference]: Finished difference Result 1499 states and 1904 transitions. [2019-10-15 02:49:41,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 02:49:41,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2019-10-15 02:49:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:49:41,738 INFO L225 Difference]: With dead ends: 1499 [2019-10-15 02:49:41,739 INFO L226 Difference]: Without dead ends: 881 [2019-10-15 02:49:41,741 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 [2019-10-15 02:49:41,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-10-15 02:49:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2019-10-15 02:49:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2019-10-15 02:49:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1106 transitions. [2019-10-15 02:49:41,789 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1106 transitions. Word has length 387 [2019-10-15 02:49:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:49:41,790 INFO L462 AbstractCegarLoop]: Abstraction has 881 states and 1106 transitions. [2019-10-15 02:49:41,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 02:49:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1106 transitions. [2019-10-15 02:49:41,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2019-10-15 02:49:41,799 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:49:41,799 INFO L380 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] [2019-10-15 02:49:41,800 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:49:41,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:49:41,800 INFO L82 PathProgramCache]: Analyzing trace with hash -870164457, now seen corresponding path program 1 times [2019-10-15 02:49:41,800 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:49:41,801 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057841271] [2019-10-15 02:49:41,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:41,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:41,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:49:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:49:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3439 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3431 trivial. 0 not checked. [2019-10-15 02:49:42,716 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057841271] [2019-10-15 02:49:42,717 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082922239] [2019-10-15 02:49:42,717 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 [2019-10-15 02:49:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:49:43,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 02:49:43,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:49:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3439 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2019-10-15 02:49:43,791 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:49:43,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:49:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3431 trivial. 0 not checked. [2019-10-15 02:49:45,332 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 02:49:45,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [8] total 17 [2019-10-15 02:49:45,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788385461] [2019-10-15 02:49:45,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 02:49:45,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:49:45,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 02:49:45,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-10-15 02:49:45,336 INFO L87 Difference]: Start difference. First operand 881 states and 1106 transitions. Second operand 12 states. [2019-10-15 02:49:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:49:47,954 INFO L93 Difference]: Finished difference Result 2197 states and 2782 transitions. [2019-10-15 02:49:47,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 02:49:47,955 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 682 [2019-10-15 02:49:47,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:49:47,970 INFO L225 Difference]: With dead ends: 2197 [2019-10-15 02:49:47,970 INFO L226 Difference]: Without dead ends: 1970 [2019-10-15 02:49:47,975 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1375 GetRequests, 1355 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2019-10-15 02:49:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2019-10-15 02:49:48,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1960. [2019-10-15 02:49:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2019-10-15 02:49:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2516 transitions. [2019-10-15 02:49:48,128 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2516 transitions. Word has length 682 [2019-10-15 02:49:48,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:49:48,131 INFO L462 AbstractCegarLoop]: Abstraction has 1960 states and 2516 transitions. [2019-10-15 02:49:48,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 02:49:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2516 transitions. [2019-10-15 02:49:48,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2019-10-15 02:49:48,143 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:49:48,144 INFO L380 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] [2019-10-15 02:49:48,353 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:49:48,354 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:49:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:49:48,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1469004023, now seen corresponding path program 1 times [2019-10-15 02:49:48,354 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:49:48,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196487718] [2019-10-15 02:49:48,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:48,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:48,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:49:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:49:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4820 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4809 trivial. 0 not checked. [2019-10-15 02:49:49,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196487718] [2019-10-15 02:49:49,174 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:49:49,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:49:49,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423550454] [2019-10-15 02:49:49,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:49:49,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:49:49,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:49:49,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:49:49,178 INFO L87 Difference]: Start difference. First operand 1960 states and 2516 transitions. Second operand 5 states. [2019-10-15 02:49:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:49:55,307 INFO L93 Difference]: Finished difference Result 6082 states and 7941 transitions. [2019-10-15 02:49:55,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 02:49:55,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 801 [2019-10-15 02:49:55,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:49:55,336 INFO L225 Difference]: With dead ends: 6082 [2019-10-15 02:49:55,336 INFO L226 Difference]: Without dead ends: 4395 [2019-10-15 02:49:55,345 INFO L600 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 [2019-10-15 02:49:55,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2019-10-15 02:49:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 4039. [2019-10-15 02:49:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4039 states. [2019-10-15 02:49:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4039 states to 4039 states and 5171 transitions. [2019-10-15 02:49:55,638 INFO L78 Accepts]: Start accepts. Automaton has 4039 states and 5171 transitions. Word has length 801 [2019-10-15 02:49:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:49:55,640 INFO L462 AbstractCegarLoop]: Abstraction has 4039 states and 5171 transitions. [2019-10-15 02:49:55,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:49:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4039 states and 5171 transitions. [2019-10-15 02:49:55,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2019-10-15 02:49:55,669 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:49:55,670 INFO L380 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] [2019-10-15 02:49:55,671 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:49:55,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:49:55,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1812495261, now seen corresponding path program 1 times [2019-10-15 02:49:55,671 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:49:55,672 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889581155] [2019-10-15 02:49:55,672 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:55,672 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:49:55,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:49:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:49:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6028 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6003 trivial. 0 not checked. [2019-10-15 02:49:57,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889581155] [2019-10-15 02:49:57,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629449877] [2019-10-15 02:49:57,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-15 02:49:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:49:58,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 3810 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 02:49:59,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:49:59,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:49:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6028 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 5945 trivial. 0 not checked. [2019-10-15 02:49:59,508 INFO L321 TraceCheckSpWp]: Computing backward predicates...