/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -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 00:16:14,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:16:14,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:16:14,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:16:14,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:16:14,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:16:14,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:16:14,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:16:14,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:16:14,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:16:14,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:16:14,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:16:14,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:16:14,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:16:14,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:16:14,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:16:14,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:16:14,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:16:14,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:16:14,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:16:14,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:16:14,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:16:14,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:16:14,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:16:14,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:16:14,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:16:14,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:16:14,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:16:14,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:16:14,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:16:14,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:16:14,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:16:14,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:16:14,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:16:14,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:16:14,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:16:14,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:16:14,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:16:14,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:16:14,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:16:14,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:16:14,358 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 00:16:14,372 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:16:14,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:16:14,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:16:14,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:16:14,374 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:16:14,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:16:14,374 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:16:14,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:16:14,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:16:14,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:16:14,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:16:14,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:16:14,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:16:14,375 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:16:14,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:16:14,376 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:16:14,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:16:14,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:16:14,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:16:14,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:16:14,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:16:14,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:16:14,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:16:14,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:16:14,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:16:14,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:16:14,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:16:14,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:16:14,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:16:14,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:16:14,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:16:14,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:16:14,675 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:16:14,676 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:16:14,676 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-11-07 00:16:14,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eedd87973/d64424deee8242088bcc0ac25e3b2a00/FLAG84f785968 [2019-11-07 00:16:15,448 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:16:15,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-11-07 00:16:15,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eedd87973/d64424deee8242088bcc0ac25e3b2a00/FLAG84f785968 [2019-11-07 00:16:15,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eedd87973/d64424deee8242088bcc0ac25e3b2a00 [2019-11-07 00:16:15,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:16:15,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:16:15,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:16:15,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:16:15,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:16:15,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:16:15" (1/1) ... [2019-11-07 00:16:15,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253b3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:15, skipping insertion in model container [2019-11-07 00:16:15,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:16:15" (1/1) ... [2019-11-07 00:16:15,590 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:16:15,684 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:16:16,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:16:16,708 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:16:16,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:16:16,986 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:16:16,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:16 WrapperNode [2019-11-07 00:16:16,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:16:16,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:16:16,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:16:16,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:16:17,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:16" (1/1) ... [2019-11-07 00:16:17,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:16" (1/1) ... [2019-11-07 00:16:17,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:16" (1/1) ... [2019-11-07 00:16:17,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:16" (1/1) ... [2019-11-07 00:16:17,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:16" (1/1) ... [2019-11-07 00:16:17,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:16" (1/1) ... [2019-11-07 00:16:17,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:16" (1/1) ... [2019-11-07 00:16:17,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:16:17,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:16:17,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:16:17,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:16:17,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:16" (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 00:16:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:16:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:16:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2019-11-07 00:16:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-11-07 00:16:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-11-07 00:16:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2019-11-07 00:16:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-11-07 00:16:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-11-07 00:16:17,252 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-11-07 00:16:17,252 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-11-07 00:16:17,253 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2019-11-07 00:16:17,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 00:16:17,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 00:16:17,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-11-07 00:16:17,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-11-07 00:16:17,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 00:16:17,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 00:16:17,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 00:16:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 00:16:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 00:16:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-07 00:16:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_select_wdt_out [2019-11-07 00:16:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_swc [2019-11-07 00:16:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_get_swc_base_addr [2019-11-07 00:16:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_swc_bank3 [2019-11-07 00:16:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_programm_wdto [2019-11-07 00:16:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_wden [2019-11-07 00:16:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_sw_wd_tren [2019-11-07 00:16:17,261 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable_sw_wd_tren [2019-11-07 00:16:17,261 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_sw_wd_trg [2019-11-07 00:16:17,261 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable_sw_wd_trg [2019-11-07 00:16:17,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable [2019-11-07 00:16:17,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable [2019-11-07 00:16:17,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_refresh [2019-11-07 00:16:17,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_open [2019-11-07 00:16:17,263 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_release [2019-11-07 00:16:17,263 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_status [2019-11-07 00:16:17,264 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_write [2019-11-07 00:16:17,264 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_ioctl [2019-11-07 00:16:17,265 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_notify_sys [2019-11-07 00:16:17,265 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_init [2019-11-07 00:16:17,265 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_exit [2019-11-07 00:16:17,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2019-11-07 00:16:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:16:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___module_get_5 [2019-11-07 00:16:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonseekable_open_6 [2019-11-07 00:16:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_register_7 [2019-11-07 00:16:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_8 [2019-11-07 00:16:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_9 [2019-11-07 00:16:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 00:16:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-07 00:16:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-07 00:16:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-07 00:16:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-07 00:16:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-11-07 00:16:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-11-07 00:16:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-11-07 00:16:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-11-07 00:16:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-11-07 00:16:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 00:16:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-11-07 00:16:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2019-11-07 00:16:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-11-07 00:16:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-11-07 00:16:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-07 00:16:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-11-07 00:16:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-11-07 00:16:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 00:16:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2019-11-07 00:16:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_register [2019-11-07 00:16:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2019-11-07 00:16:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 00:16:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure register_reboot_notifier [2019-11-07 00:16:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2019-11-07 00:16:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 00:16:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 00:16:17,276 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-07 00:16:17,276 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 00:16:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:16:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 00:16:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-11-07 00:16:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-11-07 00:16:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 00:16:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2019-11-07 00:16:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-07 00:16:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2019-11-07 00:16:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2019-11-07 00:16:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:16:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-11-07 00:16:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-11-07 00:16:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-11-07 00:16:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-11-07 00:16:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-11-07 00:16:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-11-07 00:16:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-11-07 00:16:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-11-07 00:16:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2019-11-07 00:16:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___module_get_5 [2019-11-07 00:16:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-11-07 00:16:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:16:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:16:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:16:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 00:16:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 00:16:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:16:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 00:16:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:16:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 00:16:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 00:16:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-11-07 00:16:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-11-07 00:16:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-07 00:16:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 00:16:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 00:16:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 00:16:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 00:16:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2019-11-07 00:16:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure misc_register [2019-11-07 00:16:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_register_7 [2019-11-07 00:16:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2019-11-07 00:16:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_8 [2019-11-07 00:16:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_9 [2019-11-07 00:16:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2019-11-07 00:16:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonseekable_open_6 [2019-11-07 00:16:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure register_reboot_notifier [2019-11-07 00:16:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2019-11-07 00:16:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-07 00:16:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-11-07 00:16:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-07 00:16:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:16:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_select_wdt_out [2019-11-07 00:16:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_swc [2019-11-07 00:16:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_get_swc_base_addr [2019-11-07 00:16:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_swc_bank3 [2019-11-07 00:16:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_programm_wdto [2019-11-07 00:16:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_wden [2019-11-07 00:16:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_sw_wd_tren [2019-11-07 00:16:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable_sw_wd_tren [2019-11-07 00:16:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_sw_wd_trg [2019-11-07 00:16:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable_sw_wd_trg [2019-11-07 00:16:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable [2019-11-07 00:16:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable [2019-11-07 00:16:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_refresh [2019-11-07 00:16:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_open [2019-11-07 00:16:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_release [2019-11-07 00:16:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_status [2019-11-07 00:16:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_write [2019-11-07 00:16:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_ioctl [2019-11-07 00:16:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:16:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:16:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:16:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_notify_sys [2019-11-07 00:16:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_init [2019-11-07 00:16:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_exit [2019-11-07 00:16:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 00:16:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 00:16:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:16:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:16:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 00:16:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-07 00:16:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-07 00:16:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-07 00:16:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-07 00:16:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-11-07 00:16:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-11-07 00:16:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-11-07 00:16:17,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-11-07 00:16:17,320 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 00:16:17,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-07 00:16:17,320 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:16:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 00:16:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:16:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:16:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 00:16:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:16:17,965 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 00:16:18,782 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-11-07 00:16:21,403 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:16:21,404 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:16:21,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:16:21 BoogieIcfgContainer [2019-11-07 00:16:21,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:16:21,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:16:21,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:16:21,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:16:21,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:16:15" (1/3) ... [2019-11-07 00:16:21,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580975e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:16:21, skipping insertion in model container [2019-11-07 00:16:21,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:16" (2/3) ... [2019-11-07 00:16:21,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580975e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:16:21, skipping insertion in model container [2019-11-07 00:16:21,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:16:21" (3/3) ... [2019-11-07 00:16:21,420 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 00:16:21,432 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:16:21,446 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:16:21,459 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:16:21,501 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:16:21,501 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:16:21,501 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:16:21,502 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:16:21,502 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:16:21,502 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:16:21,502 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:16:21,502 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:16:21,541 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states. [2019-11-07 00:16:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-07 00:16:21,571 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:21,573 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1] [2019-11-07 00:16:21,576 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:16:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:16:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash -140049364, now seen corresponding path program 1 times [2019-11-07 00:16:21,592 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:16:21,592 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324185673] [2019-11-07 00:16:21,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:16:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2019-11-07 00:16:22,371 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324185673] [2019-11-07 00:16:22,372 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:16:22,372 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:16:22,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770425440] [2019-11-07 00:16:22,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:16:22,379 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:16:22,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:16:22,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:16:22,396 INFO L87 Difference]: Start difference. First operand 487 states. Second operand 3 states. [2019-11-07 00:16:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:16:22,551 INFO L93 Difference]: Finished difference Result 933 states and 1223 transitions. [2019-11-07 00:16:22,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:16:22,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2019-11-07 00:16:22,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:16:22,587 INFO L225 Difference]: With dead ends: 933 [2019-11-07 00:16:22,587 INFO L226 Difference]: Without dead ends: 472 [2019-11-07 00:16:22,599 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 00:16:22,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2019-11-07 00:16:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 467. [2019-11-07 00:16:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-11-07 00:16:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 607 transitions. [2019-11-07 00:16:22,721 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 607 transitions. Word has length 144 [2019-11-07 00:16:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:16:22,724 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 607 transitions. [2019-11-07 00:16:22,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:16:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 607 transitions. [2019-11-07 00:16:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-07 00:16:22,728 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:22,728 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1] [2019-11-07 00:16:22,728 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:16:22,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:16:22,729 INFO L82 PathProgramCache]: Analyzing trace with hash -82791062, now seen corresponding path program 1 times [2019-11-07 00:16:22,729 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:16:22,729 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169356187] [2019-11-07 00:16:22,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:16:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2019-11-07 00:16:23,076 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169356187] [2019-11-07 00:16:23,076 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:16:23,076 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:16:23,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687759544] [2019-11-07 00:16:23,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:16:23,082 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:16:23,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:16:23,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:16:23,083 INFO L87 Difference]: Start difference. First operand 467 states and 607 transitions. Second operand 3 states. [2019-11-07 00:16:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:16:23,191 INFO L93 Difference]: Finished difference Result 896 states and 1169 transitions. [2019-11-07 00:16:23,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:16:23,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2019-11-07 00:16:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:16:23,208 INFO L225 Difference]: With dead ends: 896 [2019-11-07 00:16:23,209 INFO L226 Difference]: Without dead ends: 873 [2019-11-07 00:16:23,210 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 00:16:23,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2019-11-07 00:16:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 872. [2019-11-07 00:16:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2019-11-07 00:16:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1139 transitions. [2019-11-07 00:16:23,299 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1139 transitions. Word has length 144 [2019-11-07 00:16:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:16:23,303 INFO L462 AbstractCegarLoop]: Abstraction has 872 states and 1139 transitions. [2019-11-07 00:16:23,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:16:23,304 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1139 transitions. [2019-11-07 00:16:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2019-11-07 00:16:23,320 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:23,320 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:16:23,321 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:16:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:16:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1426613195, now seen corresponding path program 1 times [2019-11-07 00:16:23,322 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:16:23,322 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210172378] [2019-11-07 00:16:23,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:16:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-11-07 00:16:23,669 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210172378] [2019-11-07 00:16:23,670 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:16:23,670 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:16:23,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108223764] [2019-11-07 00:16:23,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:16:23,672 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:16:23,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:16:23,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:16:23,673 INFO L87 Difference]: Start difference. First operand 872 states and 1139 transitions. Second operand 3 states. [2019-11-07 00:16:23,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:16:23,798 INFO L93 Difference]: Finished difference Result 1991 states and 2565 transitions. [2019-11-07 00:16:23,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:16:23,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 371 [2019-11-07 00:16:23,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:16:23,812 INFO L225 Difference]: With dead ends: 1991 [2019-11-07 00:16:23,813 INFO L226 Difference]: Without dead ends: 1157 [2019-11-07 00:16:23,816 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 00:16:23,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2019-11-07 00:16:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1125. [2019-11-07 00:16:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2019-11-07 00:16:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1437 transitions. [2019-11-07 00:16:23,899 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1437 transitions. Word has length 371 [2019-11-07 00:16:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:16:23,900 INFO L462 AbstractCegarLoop]: Abstraction has 1125 states and 1437 transitions. [2019-11-07 00:16:23,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:16:23,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1437 transitions. [2019-11-07 00:16:23,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2019-11-07 00:16:23,915 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:23,915 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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] [2019-11-07 00:16:23,916 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:16:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:16:23,917 INFO L82 PathProgramCache]: Analyzing trace with hash -614728245, now seen corresponding path program 1 times [2019-11-07 00:16:23,917 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:16:23,919 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301031902] [2019-11-07 00:16:23,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:16:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2019-11-07 00:16:24,351 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301031902] [2019-11-07 00:16:24,352 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873493916] [2019-11-07 00:16:24,352 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 00:16:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:25,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 2535 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:16:25,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:16:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2019-11-07 00:16:25,422 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:16:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2019-11-07 00:16:26,219 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:16:26,219 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2019-11-07 00:16:26,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102699769] [2019-11-07 00:16:26,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:16:26,223 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:16:26,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:16:26,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:16:26,224 INFO L87 Difference]: Start difference. First operand 1125 states and 1437 transitions. Second operand 4 states. [2019-11-07 00:16:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:16:26,551 INFO L93 Difference]: Finished difference Result 2987 states and 3838 transitions. [2019-11-07 00:16:26,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:16:26,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 448 [2019-11-07 00:16:26,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:16:26,563 INFO L225 Difference]: With dead ends: 2987 [2019-11-07 00:16:26,564 INFO L226 Difference]: Without dead ends: 1818 [2019-11-07 00:16:26,571 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 895 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:16:26,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2019-11-07 00:16:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1811. [2019-11-07 00:16:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2019-11-07 00:16:26,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2334 transitions. [2019-11-07 00:16:26,670 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2334 transitions. Word has length 448 [2019-11-07 00:16:26,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:16:26,672 INFO L462 AbstractCegarLoop]: Abstraction has 1811 states and 2334 transitions. [2019-11-07 00:16:26,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:16:26,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2334 transitions. [2019-11-07 00:16:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2019-11-07 00:16:26,686 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:26,686 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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] [2019-11-07 00:16:26,893 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:16:26,894 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:16:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:16:26,895 INFO L82 PathProgramCache]: Analyzing trace with hash 702037513, now seen corresponding path program 1 times [2019-11-07 00:16:26,895 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:16:26,895 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030814010] [2019-11-07 00:16:26,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:16:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2019-11-07 00:16:27,283 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030814010] [2019-11-07 00:16:27,283 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923141995] [2019-11-07 00:16:27,283 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 00:16:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:27,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 00:16:27,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:16:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2019-11-07 00:16:27,953 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:16:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2019-11-07 00:16:28,552 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:16:28,553 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 6 [2019-11-07 00:16:28,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261855139] [2019-11-07 00:16:28,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:16:28,556 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:16:28,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:16:28,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:16:28,557 INFO L87 Difference]: Start difference. First operand 1811 states and 2334 transitions. Second operand 3 states. [2019-11-07 00:16:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:16:28,663 INFO L93 Difference]: Finished difference Result 2819 states and 3606 transitions. [2019-11-07 00:16:28,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:16:28,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 448 [2019-11-07 00:16:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:16:28,672 INFO L225 Difference]: With dead ends: 2819 [2019-11-07 00:16:28,672 INFO L226 Difference]: Without dead ends: 1028 [2019-11-07 00:16:28,678 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 898 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:16:28,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2019-11-07 00:16:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1028. [2019-11-07 00:16:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2019-11-07 00:16:28,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1298 transitions. [2019-11-07 00:16:28,739 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1298 transitions. Word has length 448 [2019-11-07 00:16:28,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:16:28,740 INFO L462 AbstractCegarLoop]: Abstraction has 1028 states and 1298 transitions. [2019-11-07 00:16:28,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:16:28,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1298 transitions. [2019-11-07 00:16:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2019-11-07 00:16:28,752 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:28,752 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 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] [2019-11-07 00:16:28,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:16:28,964 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:16:28,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:16:28,964 INFO L82 PathProgramCache]: Analyzing trace with hash 307794317, now seen corresponding path program 1 times [2019-11-07 00:16:28,964 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:16:28,965 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891378208] [2019-11-07 00:16:28,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:16:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:29,264 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2019-11-07 00:16:29,265 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891378208] [2019-11-07 00:16:29,265 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:16:29,265 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:16:29,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429015458] [2019-11-07 00:16:29,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:16:29,266 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:16:29,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:16:29,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:16:29,267 INFO L87 Difference]: Start difference. First operand 1028 states and 1298 transitions. Second operand 6 states. [2019-11-07 00:16:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:16:29,415 INFO L93 Difference]: Finished difference Result 1753 states and 2244 transitions. [2019-11-07 00:16:29,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:16:29,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 454 [2019-11-07 00:16:29,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:16:29,431 INFO L225 Difference]: With dead ends: 1753 [2019-11-07 00:16:29,432 INFO L226 Difference]: Without dead ends: 1023 [2019-11-07 00:16:29,439 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 00:16:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2019-11-07 00:16:29,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1021. [2019-11-07 00:16:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2019-11-07 00:16:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1289 transitions. [2019-11-07 00:16:29,493 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1289 transitions. Word has length 454 [2019-11-07 00:16:29,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:16:29,494 INFO L462 AbstractCegarLoop]: Abstraction has 1021 states and 1289 transitions. [2019-11-07 00:16:29,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:16:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1289 transitions. [2019-11-07 00:16:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2019-11-07 00:16:29,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:29,534 INFO L410 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 14, 14, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:16:29,534 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:16:29,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:16:29,535 INFO L82 PathProgramCache]: Analyzing trace with hash 71902264, now seen corresponding path program 1 times [2019-11-07 00:16:29,536 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:16:29,536 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907018097] [2019-11-07 00:16:29,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:16:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4057 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2019-11-07 00:16:30,561 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907018097] [2019-11-07 00:16:30,561 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205427319] [2019-11-07 00:16:30,561 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 [2019-11-07 00:16:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:31,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 3409 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 00:16:31,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:16:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4057 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 3982 trivial. 0 not checked. [2019-11-07 00:16:31,693 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:16:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4057 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2019-11-07 00:16:33,279 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:16:33,279 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 5 [2019-11-07 00:16:33,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128730189] [2019-11-07 00:16:33,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:16:33,281 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:16:33,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:16:33,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:16:33,282 INFO L87 Difference]: Start difference. First operand 1021 states and 1289 transitions. Second operand 4 states. [2019-11-07 00:16:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:16:33,949 INFO L93 Difference]: Finished difference Result 2546 states and 3258 transitions. [2019-11-07 00:16:33,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:16:33,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 791 [2019-11-07 00:16:33,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:16:33,966 INFO L225 Difference]: With dead ends: 2546 [2019-11-07 00:16:33,967 INFO L226 Difference]: Without dead ends: 2298 [2019-11-07 00:16:33,969 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1585 GetRequests, 1580 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:16:33,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2019-11-07 00:16:34,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2296. [2019-11-07 00:16:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2296 states. [2019-11-07 00:16:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 2979 transitions. [2019-11-07 00:16:34,111 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 2979 transitions. Word has length 791 [2019-11-07 00:16:34,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:16:34,113 INFO L462 AbstractCegarLoop]: Abstraction has 2296 states and 2979 transitions. [2019-11-07 00:16:34,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:16:34,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 2979 transitions. [2019-11-07 00:16:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2019-11-07 00:16:34,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:34,143 INFO L410 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 14, 14, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:16:34,351 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:16:34,352 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:16:34,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:16:34,353 INFO L82 PathProgramCache]: Analyzing trace with hash 418544163, now seen corresponding path program 1 times [2019-11-07 00:16:34,353 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:16:34,353 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953796285] [2019-11-07 00:16:34,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:16:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4068 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2019-11-07 00:16:35,513 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953796285] [2019-11-07 00:16:35,513 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:16:35,513 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:16:35,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529307512] [2019-11-07 00:16:35,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:16:35,521 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:16:35,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:16:35,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:16:35,522 INFO L87 Difference]: Start difference. First operand 2296 states and 2979 transitions. Second operand 7 states. [2019-11-07 00:16:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:16:35,765 INFO L93 Difference]: Finished difference Result 6318 states and 8271 transitions. [2019-11-07 00:16:35,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:16:35,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 796 [2019-11-07 00:16:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:16:35,796 INFO L225 Difference]: With dead ends: 6318 [2019-11-07 00:16:35,796 INFO L226 Difference]: Without dead ends: 4325 [2019-11-07 00:16:35,806 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:16:35,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2019-11-07 00:16:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 2316. [2019-11-07 00:16:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2316 states. [2019-11-07 00:16:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 2999 transitions. [2019-11-07 00:16:35,984 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 2999 transitions. Word has length 796 [2019-11-07 00:16:35,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:16:35,985 INFO L462 AbstractCegarLoop]: Abstraction has 2316 states and 2999 transitions. [2019-11-07 00:16:35,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:16:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 2999 transitions. [2019-11-07 00:16:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2019-11-07 00:16:36,006 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:36,007 INFO L410 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 20, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:36,007 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:16:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:16:36,008 INFO L82 PathProgramCache]: Analyzing trace with hash 697134351, now seen corresponding path program 1 times [2019-11-07 00:16:36,008 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:16:36,008 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818115910] [2019-11-07 00:16:36,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:16:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7115 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 7082 trivial. 0 not checked. [2019-11-07 00:16:37,220 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818115910] [2019-11-07 00:16:37,220 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679825852] [2019-11-07 00:16:37,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:16:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:38,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 3957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:16:38,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:16:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7115 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7085 trivial. 0 not checked. [2019-11-07 00:16:38,510 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:16:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7115 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 7088 trivial. 0 not checked. [2019-11-07 00:16:40,381 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:16:40,382 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2019-11-07 00:16:40,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752779749] [2019-11-07 00:16:40,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:16:40,384 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:16:40,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:16:40,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:16:40,385 INFO L87 Difference]: Start difference. First operand 2316 states and 2999 transitions. Second operand 3 states. [2019-11-07 00:16:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:16:40,547 INFO L93 Difference]: Finished difference Result 2345 states and 3026 transitions. [2019-11-07 00:16:40,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:16:40,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1004 [2019-11-07 00:16:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:16:40,562 INFO L225 Difference]: With dead ends: 2345 [2019-11-07 00:16:40,562 INFO L226 Difference]: Without dead ends: 2135 [2019-11-07 00:16:40,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2013 GetRequests, 2008 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:16:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2019-11-07 00:16:40,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 2135. [2019-11-07 00:16:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2019-11-07 00:16:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 2783 transitions. [2019-11-07 00:16:40,692 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 2783 transitions. Word has length 1004 [2019-11-07 00:16:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:16:40,694 INFO L462 AbstractCegarLoop]: Abstraction has 2135 states and 2783 transitions. [2019-11-07 00:16:40,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:16:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 2783 transitions. [2019-11-07 00:16:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2019-11-07 00:16:40,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:40,712 INFO L410 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 20, 20, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:40,928 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:16:40,929 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:16:40,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:16:40,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1992523402, now seen corresponding path program 1 times [2019-11-07 00:16:40,930 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:16:40,930 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291617827] [2019-11-07 00:16:40,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:16:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7099 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 7064 trivial. 0 not checked. [2019-11-07 00:16:42,433 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291617827] [2019-11-07 00:16:42,434 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75663494] [2019-11-07 00:16:42,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:16:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:16:43,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 3945 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 00:16:43,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:16:43,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:16:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7099 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 7000 trivial. 0 not checked. [2019-11-07 00:16:44,145 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:16:45,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:16:45,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:16:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7099 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 7064 trivial. 0 not checked. [2019-11-07 00:16:46,263 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:16:46,264 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6] total 11 [2019-11-07 00:16:46,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864697406] [2019-11-07 00:16:46,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:16:46,265 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:16:46,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:16:46,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:16:46,266 INFO L87 Difference]: Start difference. First operand 2135 states and 2783 transitions. Second operand 9 states. [2019-11-07 00:16:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:16:46,566 INFO L93 Difference]: Finished difference Result 4255 states and 5554 transitions. [2019-11-07 00:16:46,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:16:46,566 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 999 [2019-11-07 00:16:46,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:16:46,577 INFO L225 Difference]: With dead ends: 4255 [2019-11-07 00:16:46,578 INFO L226 Difference]: Without dead ends: 2141 [2019-11-07 00:16:46,585 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2006 GetRequests, 1991 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:16:46,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2019-11-07 00:16:46,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2141. [2019-11-07 00:16:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2141 states. [2019-11-07 00:16:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 2789 transitions. [2019-11-07 00:16:46,714 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 2789 transitions. Word has length 999 [2019-11-07 00:16:46,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:16:46,714 INFO L462 AbstractCegarLoop]: Abstraction has 2141 states and 2789 transitions. [2019-11-07 00:16:46,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:16:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 2789 transitions. [2019-11-07 00:16:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2019-11-07 00:16:46,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:16:46,734 INFO L410 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 20, 20, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]