/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 -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 20:58:27,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 20:58:27,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 20:58:27,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 20:58:27,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 20:58:27,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 20:58:27,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 20:58:27,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 20:58:27,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 20:58:27,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 20:58:27,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 20:58:27,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 20:58:27,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 20:58:27,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 20:58:27,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 20:58:27,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 20:58:27,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 20:58:27,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 20:58:27,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 20:58:27,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 20:58:27,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 20:58:27,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 20:58:27,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 20:58:27,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 20:58:27,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 20:58:27,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 20:58:27,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 20:58:27,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 20:58:27,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 20:58:27,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 20:58:27,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 20:58:27,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 20:58:27,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 20:58:27,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 20:58:27,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 20:58:27,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 20:58:27,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 20:58:27,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 20:58:27,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 20:58:27,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 20:58:27,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 20:58:27,392 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 [2019-11-06 20:58:27,414 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 20:58:27,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 20:58:27,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 20:58:27,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 20:58:27,417 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 20:58:27,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 20:58:27,417 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 20:58:27,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 20:58:27,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 20:58:27,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 20:58:27,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 20:58:27,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 20:58:27,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 20:58:27,420 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 20:58:27,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 20:58:27,420 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 20:58:27,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 20:58:27,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 20:58:27,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 20:58:27,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 20:58:27,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 20:58:27,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 20:58:27,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 20:58:27,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 20:58:27,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 20:58:27,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 20:58:27,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 20:58:27,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 20:58:27,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 20:58:27,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 20:58:27,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 20:58:27,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 20:58:27,711 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 20:58:27,711 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 20:58:27,712 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2019-11-06 20:58:27,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad2c327d0/d9f929f6b1704b3fafc1669bc846614d/FLAGa9721cb5a [2019-11-06 20:58:28,489 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 20:58:28,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2019-11-06 20:58:28,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad2c327d0/d9f929f6b1704b3fafc1669bc846614d/FLAGa9721cb5a [2019-11-06 20:58:28,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad2c327d0/d9f929f6b1704b3fafc1669bc846614d [2019-11-06 20:58:28,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 20:58:28,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 20:58:28,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 20:58:28,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 20:58:28,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 20:58:28,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:58:28" (1/1) ... [2019-11-06 20:58:28,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e102ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28, skipping insertion in model container [2019-11-06 20:58:28,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:58:28" (1/1) ... [2019-11-06 20:58:28,669 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 20:58:28,774 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 20:58:29,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 20:58:29,786 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 20:58:30,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 20:58:30,091 INFO L192 MainTranslator]: Completed translation [2019-11-06 20:58:30,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:30 WrapperNode [2019-11-06 20:58:30,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 20:58:30,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 20:58:30,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 20:58:30,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 20:58:30,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:30" (1/1) ... [2019-11-06 20:58:30,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:30" (1/1) ... [2019-11-06 20:58:30,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:30" (1/1) ... [2019-11-06 20:58:30,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:30" (1/1) ... [2019-11-06 20:58:30,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:30" (1/1) ... [2019-11-06 20:58:30,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:30" (1/1) ... [2019-11-06 20:58:30,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:30" (1/1) ... [2019-11-06 20:58:30,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 20:58:30,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 20:58:30,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 20:58:30,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 20:58:30,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 20:58:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 20:58:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 20:58:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-11-06 20:58:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-11-06 20:58:30,337 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-11-06 20:58:30,337 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-11-06 20:58:30,337 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-11-06 20:58:30,337 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-11-06 20:58:30,337 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-11-06 20:58:30,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 20:58:30,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-06 20:58:30,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-11-06 20:58:30,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-11-06 20:58:30,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-06 20:58:30,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-06 20:58:30,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-06 20:58:30,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-06 20:58:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-06 20:58:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-06 20:58:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_enter [2019-11-06 20:58:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_exit [2019-11-06 20:58:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_select [2019-11-06 20:58:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inb [2019-11-06 20:58:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outb [2019-11-06 20:58:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inw [2019-11-06 20:58:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outw [2019-11-06 20:58:30,342 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_update_timeout [2019-11-06 20:58:30,342 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_round_time [2019-11-06 20:58:30,342 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_keepalive [2019-11-06 20:58:30,342 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_start [2019-11-06 20:58:30,342 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_stop [2019-11-06 20:58:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_set_timeout [2019-11-06 20:58:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_get_status [2019-11-06 20:58:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_open [2019-11-06 20:58:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_release [2019-11-06 20:58:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_write [2019-11-06 20:58:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_ioctl [2019-11-06 20:58:30,344 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_notify_sys [2019-11-06 20:58:30,344 INFO L138 BoogieDeclarations]: Found implementation of procedure it87_wdt_init [2019-11-06 20:58:30,344 INFO L138 BoogieDeclarations]: Found implementation of procedure it87_wdt_exit [2019-11-06 20:58:30,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2019-11-06 20:58:30,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 20:58:30,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___module_get_5 [2019-11-06 20:58:30,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonseekable_open_6 [2019-11-06 20:58:30,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_register_7 [2019-11-06 20:58:30,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_8 [2019-11-06 20:58:30,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-06 20:58:30,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-06 20:58:30,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-06 20:58:30,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-06 20:58:30,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-06 20:58:30,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-11-06 20:58:30,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-11-06 20:58:30,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-11-06 20:58:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-11-06 20:58:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-11-06 20:58:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 20:58:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-11-06 20:58:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2019-11-06 20:58:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-11-06 20:58:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-11-06 20:58:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-06 20:58:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 20:58:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2019-11-06 20:58:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_register [2019-11-06 20:58:30,349 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2019-11-06 20:58:30,349 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 20:58:30,349 INFO L138 BoogieDeclarations]: Found implementation of procedure register_reboot_notifier [2019-11-06 20:58:30,349 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2019-11-06 20:58:30,349 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 20:58:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 20:58:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-06 20:58:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-06 20:58:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 20:58:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-06 20:58:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-11-06 20:58:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-11-06 20:58:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-11-06 20:58:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-11-06 20:58:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-11-06 20:58:30,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 20:58:30,352 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 20:58:30,352 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2019-11-06 20:58:30,352 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-06 20:58:30,352 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-11-06 20:58:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-11-06 20:58:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-11-06 20:58:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-11-06 20:58:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___module_get_5 [2019-11-06 20:58:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-11-06 20:58:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 20:58:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 20:58:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 20:58:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 20:58:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 20:58:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 20:58:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 20:58:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 20:58:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-06 20:58:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-06 20:58:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-11-06 20:58:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-11-06 20:58:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-06 20:58:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-06 20:58:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-06 20:58:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-06 20:58:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-06 20:58:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2019-11-06 20:58:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2019-11-06 20:58:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonseekable_open_6 [2019-11-06 20:58:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure misc_register [2019-11-06 20:58:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_register_7 [2019-11-06 20:58:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2019-11-06 20:58:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_8 [2019-11-06 20:58:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure register_reboot_notifier [2019-11-06 20:58:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2019-11-06 20:58:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-06 20:58:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-11-06 20:58:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-06 20:58:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 20:58:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure superio_enter [2019-11-06 20:58:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure superio_exit [2019-11-06 20:58:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure superio_select [2019-11-06 20:58:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inb [2019-11-06 20:58:30,362 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outb [2019-11-06 20:58:30,362 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inw [2019-11-06 20:58:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outw [2019-11-06 20:58:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_update_timeout [2019-11-06 20:58:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_round_time [2019-11-06 20:58:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_keepalive [2019-11-06 20:58:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_start [2019-11-06 20:58:30,364 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_stop [2019-11-06 20:58:30,364 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_set_timeout [2019-11-06 20:58:30,364 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_get_status [2019-11-06 20:58:30,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 20:58:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_open [2019-11-06 20:58:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_release [2019-11-06 20:58:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_write [2019-11-06 20:58:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_ioctl [2019-11-06 20:58:30,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 20:58:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 20:58:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 20:58:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_notify_sys [2019-11-06 20:58:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure it87_wdt_init [2019-11-06 20:58:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure it87_wdt_exit [2019-11-06 20:58:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 20:58:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 20:58:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 20:58:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-06 20:58:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-06 20:58:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-06 20:58:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-06 20:58:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-06 20:58:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-11-06 20:58:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-11-06 20:58:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-11-06 20:58:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-11-06 20:58:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 20:58:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-06 20:58:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 20:58:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 20:58:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 20:58:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 20:58:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-06 20:58:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 20:58:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 20:58:31,742 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-06 20:58:31,751 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-11-06 20:58:33,219 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 20:58:33,220 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 20:58:33,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:58:33 BoogieIcfgContainer [2019-11-06 20:58:33,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 20:58:33,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 20:58:33,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 20:58:33,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 20:58:33,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:58:28" (1/3) ... [2019-11-06 20:58:33,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156fb03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:58:33, skipping insertion in model container [2019-11-06 20:58:33,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:30" (2/3) ... [2019-11-06 20:58:33,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156fb03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:58:33, skipping insertion in model container [2019-11-06 20:58:33,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:58:33" (3/3) ... [2019-11-06 20:58:33,229 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2019-11-06 20:58:33,239 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 20:58:33,248 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 20:58:33,259 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 20:58:33,289 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 20:58:33,290 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 20:58:33,290 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 20:58:33,290 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 20:58:33,290 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 20:58:33,290 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 20:58:33,290 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 20:58:33,291 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 20:58:33,323 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states. [2019-11-06 20:58:33,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 20:58:33,343 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:58:33,344 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, 1, 1, 1, 1, 1, 1] [2019-11-06 20:58:33,348 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:58:33,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:58:33,354 INFO L82 PathProgramCache]: Analyzing trace with hash -960615019, now seen corresponding path program 1 times [2019-11-06 20:58:33,361 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:58:33,361 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283433270] [2019-11-06 20:58:33,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:58:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,542 WARN L191 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2019-11-06 20:58:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2019-11-06 20:58:34,902 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283433270] [2019-11-06 20:58:34,902 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 20:58:34,903 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 20:58:34,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489962974] [2019-11-06 20:58:34,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 20:58:34,911 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:58:34,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 20:58:34,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-06 20:58:34,929 INFO L87 Difference]: Start difference. First operand 665 states. Second operand 8 states. [2019-11-06 20:58:35,759 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-06 20:58:40,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 20:58:40,425 INFO L93 Difference]: Finished difference Result 706 states and 1012 transitions. [2019-11-06 20:58:40,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 20:58:40,427 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2019-11-06 20:58:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 20:58:40,474 INFO L225 Difference]: With dead ends: 706 [2019-11-06 20:58:40,475 INFO L226 Difference]: Without dead ends: 673 [2019-11-06 20:58:40,482 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2019-11-06 20:58:40,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2019-11-06 20:58:40,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 645. [2019-11-06 20:58:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-11-06 20:58:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 929 transitions. [2019-11-06 20:58:40,691 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 929 transitions. Word has length 150 [2019-11-06 20:58:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 20:58:40,692 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 929 transitions. [2019-11-06 20:58:40,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 20:58:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 929 transitions. [2019-11-06 20:58:40,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 20:58:40,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:58:40,699 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, 1, 1, 1, 1, 1, 1] [2019-11-06 20:58:40,699 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:58:40,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:58:40,700 INFO L82 PathProgramCache]: Analyzing trace with hash -903356717, now seen corresponding path program 1 times [2019-11-06 20:58:40,700 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:58:40,700 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257848893] [2019-11-06 20:58:40,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:58:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,297 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2019-11-06 20:58:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2019-11-06 20:58:41,709 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257848893] [2019-11-06 20:58:41,709 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 20:58:41,710 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 20:58:41,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150258608] [2019-11-06 20:58:41,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 20:58:41,712 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:58:41,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 20:58:41,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-06 20:58:41,713 INFO L87 Difference]: Start difference. First operand 645 states and 929 transitions. Second operand 8 states. [2019-11-06 20:58:43,077 WARN L191 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-06 20:58:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 20:58:52,769 INFO L93 Difference]: Finished difference Result 1277 states and 1850 transitions. [2019-11-06 20:58:52,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 20:58:52,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2019-11-06 20:58:52,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 20:58:52,781 INFO L225 Difference]: With dead ends: 1277 [2019-11-06 20:58:52,781 INFO L226 Difference]: Without dead ends: 1227 [2019-11-06 20:58:52,785 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-11-06 20:58:52,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2019-11-06 20:58:52,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1216. [2019-11-06 20:58:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2019-11-06 20:58:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1758 transitions. [2019-11-06 20:58:52,988 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1758 transitions. Word has length 150 [2019-11-06 20:58:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 20:58:52,989 INFO L462 AbstractCegarLoop]: Abstraction has 1216 states and 1758 transitions. [2019-11-06 20:58:52,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 20:58:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1758 transitions. [2019-11-06 20:58:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-11-06 20:58:52,997 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:58:52,998 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2019-11-06 20:58:52,998 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:58:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:58:52,999 INFO L82 PathProgramCache]: Analyzing trace with hash -421737455, now seen corresponding path program 1 times [2019-11-06 20:58:52,999 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:58:52,999 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210401676] [2019-11-06 20:58:52,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:58:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,563 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2019-11-06 20:58:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 20:58:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-11-06 20:58:53,921 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210401676] [2019-11-06 20:58:53,921 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 20:58:53,921 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 20:58:53,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062763226] [2019-11-06 20:58:53,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 20:58:53,923 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 20:58:53,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 20:58:53,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 20:58:53,923 INFO L87 Difference]: Start difference. First operand 1216 states and 1758 transitions. Second operand 9 states. [2019-11-06 20:58:55,774 WARN L191 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-06 20:59:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 20:59:04,557 INFO L93 Difference]: Finished difference Result 2909 states and 4206 transitions. [2019-11-06 20:59:04,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 20:59:04,557 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 217 [2019-11-06 20:59:04,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 20:59:04,570 INFO L225 Difference]: With dead ends: 2909 [2019-11-06 20:59:04,570 INFO L226 Difference]: Without dead ends: 1731 [2019-11-06 20:59:04,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2019-11-06 20:59:04,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2019-11-06 20:59:04,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1702. [2019-11-06 20:59:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2019-11-06 20:59:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2458 transitions. [2019-11-06 20:59:04,805 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2458 transitions. Word has length 217 [2019-11-06 20:59:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 20:59:04,806 INFO L462 AbstractCegarLoop]: Abstraction has 1702 states and 2458 transitions. [2019-11-06 20:59:04,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 20:59:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2458 transitions. [2019-11-06 20:59:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2019-11-06 20:59:04,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 20:59:04,819 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 20:59:04,819 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 20:59:04,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 20:59:04,820 INFO L82 PathProgramCache]: Analyzing trace with hash -362704146, now seen corresponding path program 1 times [2019-11-06 20:59:04,820 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 20:59:04,820 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057866829] [2019-11-06 20:59:04,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 20:59:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat