java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:07:50,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:07:50,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:07:50,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:07:50,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:07:50,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:07:50,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:07:50,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:07:50,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:07:50,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:07:50,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:07:50,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:07:50,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:07:50,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:07:50,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:07:50,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:07:50,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:07:50,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:07:50,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:07:50,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:07:50,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:07:50,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:07:50,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:07:50,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:07:50,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:07:50,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:07:50,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:07:50,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:07:50,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:07:50,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:07:50,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:07:50,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:07:50,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:07:50,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:07:50,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:07:50,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:07:50,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:07:50,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:07:50,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:07:50,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:07:50,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:07:50,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 02:07:50,520 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:07:50,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:07:50,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:07:50,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:07:50,522 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:07:50,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:07:50,523 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:07:50,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:07:50,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:07:50,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:07:50,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:07:50,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:07:50,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:07:50,524 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:07:50,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:07:50,525 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:07:50,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:07:50,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:07:50,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:07:50,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:07:50,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:07:50,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:07:50,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:07:50,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:07:50,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:07:50,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:07:50,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:07:50,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:07:50,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:07:50,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:07:50,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:07:50,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:07:50,832 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:07:50,832 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:07:50,833 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-10-15 02:07:50,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87eeb323/23a5a0ac4ce44a5580eb355114e7903e/FLAG209dff77f [2019-10-15 02:07:51,606 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:07:51,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-10-15 02:07:51,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87eeb323/23a5a0ac4ce44a5580eb355114e7903e/FLAG209dff77f [2019-10-15 02:07:51,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87eeb323/23a5a0ac4ce44a5580eb355114e7903e [2019-10-15 02:07:51,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:07:51,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:07:51,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:07:51,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:07:51,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:07:51,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:07:51" (1/1) ... [2019-10-15 02:07:51,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c4e5e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:51, skipping insertion in model container [2019-10-15 02:07:51,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:07:51" (1/1) ... [2019-10-15 02:07:51,743 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:07:51,848 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:07:53,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:07:53,256 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:07:53,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:07:53,614 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:07:53,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:53 WrapperNode [2019-10-15 02:07:53,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:07:53,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:07:53,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:07:53,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:07:53,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:53" (1/1) ... [2019-10-15 02:07:53,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:53" (1/1) ... [2019-10-15 02:07:53,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:53" (1/1) ... [2019-10-15 02:07:53,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:53" (1/1) ... [2019-10-15 02:07:53,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:53" (1/1) ... [2019-10-15 02:07:53,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:53" (1/1) ... [2019-10-15 02:07:53,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:53" (1/1) ... [2019-10-15 02:07:53,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:07:53,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:07:53,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:07:53,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:07:53,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:07:53,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:07:53,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:07:53,963 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-10-15 02:07:53,963 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-10-15 02:07:53,963 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-10-15 02:07:53,963 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-15 02:07:53,964 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-15 02:07:53,964 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-10-15 02:07:53,964 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-10-15 02:07:53,964 INFO L138 BoogieDeclarations]: Found implementation of procedure register_chrdev [2019-10-15 02:07:53,964 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2019-10-15 02:07:53,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-15 02:07:53,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 02:07:53,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 02:07:53,965 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 02:07:53,965 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-15 02:07:53,966 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-15 02:07:53,966 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2019-10-15 02:07:53,966 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2019-10-15 02:07:53,968 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2019-10-15 02:07:53,968 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2019-10-15 02:07:53,968 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_wait [2019-10-15 02:07:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_command [2019-10-15 02:07:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_completion [2019-10-15 02:07:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_req_sense [2019-10-15 02:07:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_atapi [2019-10-15 02:07:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_sleep [2019-10-15 02:07:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_poll_dsc [2019-10-15 02:07:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_media_access_cmd [2019-10-15 02:07:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_rewind [2019-10-15 02:07:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write_fm [2019-10-15 02:07:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_reset [2019-10-15 02:07:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ready_wait [2019-10-15 02:07:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2019-10-15 02:07:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure xn [2019-10-15 02:07:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_identify [2019-10-15 02:07:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_probe [2019-10-15 02:07:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_detect [2019-10-15 02:07:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_open [2019-10-15 02:07:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ioctl [2019-10-15 02:07:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_release [2019-10-15 02:07:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_read [2019-10-15 02:07:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write [2019-10-15 02:07:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_init [2019-10-15 02:07:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_exit [2019-10-15 02:07:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:07:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_1 [2019-10-15 02:07:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_2 [2019-10-15 02:07:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_3 [2019-10-15 02:07:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_4 [2019-10-15 02:07:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_5 [2019-10-15 02:07:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_6 [2019-10-15 02:07:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_7 [2019-10-15 02:07:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_8 [2019-10-15 02:07:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2019-10-15 02:07:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2019-10-15 02:07:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_11 [2019-10-15 02:07:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_12 [2019-10-15 02:07:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_13 [2019-10-15 02:07:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_14 [2019-10-15 02:07:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_15 [2019-10-15 02:07:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev_16 [2019-10-15 02:07:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_17 [2019-10-15 02:07:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 02:07:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 02:07:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-15 02:07:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-10-15 02:07:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-10-15 02:07:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-10-15 02:07:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-10-15 02:07:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-15 02:07:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-10-15 02:07:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-10-15 02:07:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-15 02:07:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-15 02:07:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-10-15 02:07:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-10-15 02:07:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-15 02:07:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-15 02:07:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-10-15 02:07:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_pt_mutex [2019-10-15 02:07:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_pt_mutex [2019-10-15 02:07:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pt_mutex [2019-10-15 02:07:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_pt_mutex [2019-10-15 02:07:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_pt_mutex [2019-10-15 02:07:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_pt_mutex [2019-10-15 02:07:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pt_mutex [2019-10-15 02:07:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 02:07:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 02:07:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __class_create [2019-10-15 02:07:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-10-15 02:07:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __register_chrdev [2019-10-15 02:07:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __unregister_chrdev [2019-10-15 02:07:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-15 02:07:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-15 02:07:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2019-10-15 02:07:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2019-10-15 02:07:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2019-10-15 02:07:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-15 02:07:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-15 02:07:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-10-15 02:07:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-15 02:07:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2019-10-15 02:07:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2019-10-15 02:07:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2019-10-15 02:07:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2019-10-15 02:07:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2019-10-15 02:07:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2019-10-15 02:07:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2019-10-15 02:07:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_regr [2019-10-15 02:07:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 02:07:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2019-10-15 02:07:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-15 02:07:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 02:07:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 02:07:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:07:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:07:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 02:07:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 02:07:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-15 02:07:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-15 02:07:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-15 02:07:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-10-15 02:07:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-10-15 02:07:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-10-15 02:07:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:07:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-15 02:07:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:07:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-15 02:07:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-10-15 02:07:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-10-15 02:07:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_4 [2019-10-15 02:07:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-15 02:07:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_2 [2019-10-15 02:07:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_5 [2019-10-15 02:07:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_7 [2019-10-15 02:07:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2019-10-15 02:07:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2019-10-15 02:07:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_11 [2019-10-15 02:07:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_13 [2019-10-15 02:07:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_15 [2019-10-15 02:07:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-15 02:07:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_1 [2019-10-15 02:07:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_3 [2019-10-15 02:07:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_6 [2019-10-15 02:07:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_8 [2019-10-15 02:07:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_12 [2019-10-15 02:07:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_14 [2019-10-15 02:07:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-10-15 02:07:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-10-15 02:07:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-10-15 02:07:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-10-15 02:07:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-10-15 02:07:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pt_mutex [2019-10-15 02:07:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pt_mutex [2019-10-15 02:07:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:07:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-10-15 02:07:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure __register_chrdev [2019-10-15 02:07:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure __unregister_chrdev [2019-10-15 02:07:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure register_chrdev [2019-10-15 02:07:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev_16 [2019-10-15 02:07:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2019-10-15 02:07:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_17 [2019-10-15 02:07:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-10-15 02:07:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-10-15 02:07:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 02:07:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 02:07:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:07:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-15 02:07:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 02:07:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:07:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 02:07:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 02:07:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure __class_create [2019-10-15 02:07:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2019-10-15 02:07:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2019-10-15 02:07:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2019-10-15 02:07:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2019-10-15 02:07:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-15 02:07:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-15 02:07:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-15 02:07:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-15 02:07:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2019-10-15 02:07:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2019-10-15 02:07:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_regr [2019-10-15 02:07:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2019-10-15 02:07:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2019-10-15 02:07:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2019-10-15 02:07:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2019-10-15 02:07:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2019-10-15 02:07:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure pt_open [2019-10-15 02:07:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ioctl [2019-10-15 02:07:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure pt_release [2019-10-15 02:07:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure pt_read [2019-10-15 02:07:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write [2019-10-15 02:07:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure pt_detect [2019-10-15 02:07:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure pt_identify [2019-10-15 02:07:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2019-10-15 02:07:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2019-10-15 02:07:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2019-10-15 02:07:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2019-10-15 02:07:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure pt_wait [2019-10-15 02:07:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:07:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure pt_command [2019-10-15 02:07:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure pt_completion [2019-10-15 02:07:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure pt_req_sense [2019-10-15 02:07:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:07:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure pt_atapi [2019-10-15 02:07:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure pt_sleep [2019-10-15 02:07:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure pt_poll_dsc [2019-10-15 02:07:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure pt_media_access_cmd [2019-10-15 02:07:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure pt_rewind [2019-10-15 02:07:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write_fm [2019-10-15 02:07:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure pt_reset [2019-10-15 02:07:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ready_wait [2019-10-15 02:07:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2019-10-15 02:07:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure xn [2019-10-15 02:07:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:07:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure pt_probe [2019-10-15 02:07:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure pt_init [2019-10-15 02:07:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure pt_exit [2019-10-15 02:07:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 02:07:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 02:07:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:07:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 02:07:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-15 02:07:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-10-15 02:07:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-10-15 02:07:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-10-15 02:07:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-10-15 02:07:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-15 02:07:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-10-15 02:07:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-15 02:07:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-15 02:07:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-15 02:07:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-15 02:07:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_pt_mutex [2019-10-15 02:07:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_pt_mutex [2019-10-15 02:07:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_pt_mutex [2019-10-15 02:07:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_pt_mutex [2019-10-15 02:07:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_pt_mutex [2019-10-15 02:07:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 02:07:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 02:07:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-15 02:07:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:07:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:07:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:07:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:07:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:07:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:08:03,492 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:08:03,492 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 02:08:03,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:08:03 BoogieIcfgContainer [2019-10-15 02:08:03,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:08:03,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:08:03,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:08:03,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:08:03,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:07:51" (1/3) ... [2019-10-15 02:08:03,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca85f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:08:03, skipping insertion in model container [2019-10-15 02:08:03,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:07:53" (2/3) ... [2019-10-15 02:08:03,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca85f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:08:03, skipping insertion in model container [2019-10-15 02:08:03,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:08:03" (3/3) ... [2019-10-15 02:08:03,507 INFO L109 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-10-15 02:08:03,517 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:08:03,529 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:08:03,540 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:08:03,577 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:08:03,578 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:08:03,578 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:08:03,578 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:08:03,578 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:08:03,578 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:08:03,579 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:08:03,579 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:08:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states. [2019-10-15 02:08:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-15 02:08:03,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:03,635 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:03,638 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:03,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:03,643 INFO L82 PathProgramCache]: Analyzing trace with hash -2135758099, now seen corresponding path program 1 times [2019-10-15 02:08:03,650 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:03,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523332641] [2019-10-15 02:08:03,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:03,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:03,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:08:04,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523332641] [2019-10-15 02:08:04,142 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:04,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:08:04,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120292967] [2019-10-15 02:08:04,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:08:04,151 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:04,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:08:04,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:04,165 INFO L87 Difference]: Start difference. First operand 761 states. Second operand 3 states. [2019-10-15 02:08:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:04,595 INFO L93 Difference]: Finished difference Result 1660 states and 2330 transitions. [2019-10-15 02:08:04,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:04,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-15 02:08:04,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:04,636 INFO L225 Difference]: With dead ends: 1660 [2019-10-15 02:08:04,636 INFO L226 Difference]: Without dead ends: 964 [2019-10-15 02:08:04,647 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:04,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-10-15 02:08:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 921. [2019-10-15 02:08:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2019-10-15 02:08:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1246 transitions. [2019-10-15 02:08:04,837 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1246 transitions. Word has length 28 [2019-10-15 02:08:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:04,838 INFO L462 AbstractCegarLoop]: Abstraction has 921 states and 1246 transitions. [2019-10-15 02:08:04,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:08:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1246 transitions. [2019-10-15 02:08:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-15 02:08:04,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:04,853 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:04,855 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:04,856 INFO L82 PathProgramCache]: Analyzing trace with hash 253566313, now seen corresponding path program 1 times [2019-10-15 02:08:04,856 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:04,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011323849] [2019-10-15 02:08:04,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:04,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:04,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:08:05,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011323849] [2019-10-15 02:08:05,077 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:05,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 02:08:05,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508951487] [2019-10-15 02:08:05,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:08:05,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:05,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:08:05,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:08:05,080 INFO L87 Difference]: Start difference. First operand 921 states and 1246 transitions. Second operand 4 states. [2019-10-15 02:08:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:06,311 INFO L93 Difference]: Finished difference Result 1833 states and 2485 transitions. [2019-10-15 02:08:06,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:06,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-15 02:08:06,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:06,320 INFO L225 Difference]: With dead ends: 1833 [2019-10-15 02:08:06,320 INFO L226 Difference]: Without dead ends: 921 [2019-10-15 02:08:06,325 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:08:06,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-10-15 02:08:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 921. [2019-10-15 02:08:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2019-10-15 02:08:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1244 transitions. [2019-10-15 02:08:06,377 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1244 transitions. Word has length 27 [2019-10-15 02:08:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:06,377 INFO L462 AbstractCegarLoop]: Abstraction has 921 states and 1244 transitions. [2019-10-15 02:08:06,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:08:06,378 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1244 transitions. [2019-10-15 02:08:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-15 02:08:06,380 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:06,380 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:06,380 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:06,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:06,380 INFO L82 PathProgramCache]: Analyzing trace with hash 250768757, now seen corresponding path program 1 times [2019-10-15 02:08:06,381 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:06,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746308503] [2019-10-15 02:08:06,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:06,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:06,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:08:06,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746308503] [2019-10-15 02:08:06,611 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:06,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:08:06,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993049154] [2019-10-15 02:08:06,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:08:06,612 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:06,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:08:06,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:06,613 INFO L87 Difference]: Start difference. First operand 921 states and 1244 transitions. Second operand 3 states. [2019-10-15 02:08:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:06,717 INFO L93 Difference]: Finished difference Result 1859 states and 2527 transitions. [2019-10-15 02:08:06,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:06,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-10-15 02:08:06,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:06,725 INFO L225 Difference]: With dead ends: 1859 [2019-10-15 02:08:06,726 INFO L226 Difference]: Without dead ends: 947 [2019-10-15 02:08:06,730 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:06,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2019-10-15 02:08:06,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 923. [2019-10-15 02:08:06,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2019-10-15 02:08:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1246 transitions. [2019-10-15 02:08:06,774 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1246 transitions. Word has length 35 [2019-10-15 02:08:06,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:06,774 INFO L462 AbstractCegarLoop]: Abstraction has 923 states and 1246 transitions. [2019-10-15 02:08:06,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:08:06,774 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1246 transitions. [2019-10-15 02:08:06,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-15 02:08:06,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:06,776 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:06,776 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:06,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:06,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1659733765, now seen corresponding path program 1 times [2019-10-15 02:08:06,777 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:06,777 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900552145] [2019-10-15 02:08:06,777 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:06,778 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:06,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:08:06,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900552145] [2019-10-15 02:08:06,887 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:06,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:08:06,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283874749] [2019-10-15 02:08:06,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:08:06,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:06,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:08:06,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:06,888 INFO L87 Difference]: Start difference. First operand 923 states and 1246 transitions. Second operand 3 states. [2019-10-15 02:08:07,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:07,344 INFO L93 Difference]: Finished difference Result 2015 states and 2712 transitions. [2019-10-15 02:08:07,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:07,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-10-15 02:08:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:07,352 INFO L225 Difference]: With dead ends: 2015 [2019-10-15 02:08:07,352 INFO L226 Difference]: Without dead ends: 1101 [2019-10-15 02:08:07,357 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:07,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2019-10-15 02:08:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1101. [2019-10-15 02:08:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2019-10-15 02:08:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1472 transitions. [2019-10-15 02:08:07,409 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1472 transitions. Word has length 40 [2019-10-15 02:08:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:07,410 INFO L462 AbstractCegarLoop]: Abstraction has 1101 states and 1472 transitions. [2019-10-15 02:08:07,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:08:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1472 transitions. [2019-10-15 02:08:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 02:08:07,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:07,412 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:07,412 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:07,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:07,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1078756022, now seen corresponding path program 1 times [2019-10-15 02:08:07,413 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:07,413 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257147578] [2019-10-15 02:08:07,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:07,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:07,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:08:07,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257147578] [2019-10-15 02:08:07,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:07,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:08:07,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134434365] [2019-10-15 02:08:07,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:08:07,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:07,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:08:07,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:07,534 INFO L87 Difference]: Start difference. First operand 1101 states and 1472 transitions. Second operand 3 states. [2019-10-15 02:08:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:07,608 INFO L93 Difference]: Finished difference Result 2200 states and 2952 transitions. [2019-10-15 02:08:07,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:07,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-10-15 02:08:07,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:07,618 INFO L225 Difference]: With dead ends: 2200 [2019-10-15 02:08:07,618 INFO L226 Difference]: Without dead ends: 1117 [2019-10-15 02:08:07,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2019-10-15 02:08:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1113. [2019-10-15 02:08:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2019-10-15 02:08:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1490 transitions. [2019-10-15 02:08:07,690 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1490 transitions. Word has length 42 [2019-10-15 02:08:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:07,691 INFO L462 AbstractCegarLoop]: Abstraction has 1113 states and 1490 transitions. [2019-10-15 02:08:07,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:08:07,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1490 transitions. [2019-10-15 02:08:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 02:08:07,693 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:07,693 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:07,693 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:07,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:07,693 INFO L82 PathProgramCache]: Analyzing trace with hash 925321270, now seen corresponding path program 1 times [2019-10-15 02:08:07,694 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:07,694 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072244379] [2019-10-15 02:08:07,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:07,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:07,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:08:07,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072244379] [2019-10-15 02:08:07,827 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:07,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:08:07,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822355021] [2019-10-15 02:08:07,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:08:07,827 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:07,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:08:07,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:07,828 INFO L87 Difference]: Start difference. First operand 1113 states and 1490 transitions. Second operand 3 states. [2019-10-15 02:08:08,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:08,307 INFO L93 Difference]: Finished difference Result 1115 states and 1491 transitions. [2019-10-15 02:08:08,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:08,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-15 02:08:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:08,315 INFO L225 Difference]: With dead ends: 1115 [2019-10-15 02:08:08,315 INFO L226 Difference]: Without dead ends: 1112 [2019-10-15 02:08:08,316 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-10-15 02:08:08,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2019-10-15 02:08:08,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-10-15 02:08:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1488 transitions. [2019-10-15 02:08:08,368 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1488 transitions. Word has length 47 [2019-10-15 02:08:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:08,368 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1488 transitions. [2019-10-15 02:08:08,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:08:08,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1488 transitions. [2019-10-15 02:08:08,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-15 02:08:08,369 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:08,370 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:08,370 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:08,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:08,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1380369154, now seen corresponding path program 1 times [2019-10-15 02:08:08,370 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:08,371 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981877078] [2019-10-15 02:08:08,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:08,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:08,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:08:08,480 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981877078] [2019-10-15 02:08:08,480 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:08,480 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:08:08,480 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087275095] [2019-10-15 02:08:08,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:08:08,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:08,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:08:08,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:08,482 INFO L87 Difference]: Start difference. First operand 1112 states and 1488 transitions. Second operand 3 states. [2019-10-15 02:08:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:08,947 INFO L93 Difference]: Finished difference Result 1114 states and 1489 transitions. [2019-10-15 02:08:08,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:08,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-10-15 02:08:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:08,957 INFO L225 Difference]: With dead ends: 1114 [2019-10-15 02:08:08,958 INFO L226 Difference]: Without dead ends: 1111 [2019-10-15 02:08:08,959 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2019-10-15 02:08:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2019-10-15 02:08:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2019-10-15 02:08:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1486 transitions. [2019-10-15 02:08:09,024 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1486 transitions. Word has length 48 [2019-10-15 02:08:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:09,024 INFO L462 AbstractCegarLoop]: Abstraction has 1111 states and 1486 transitions. [2019-10-15 02:08:09,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:08:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1486 transitions. [2019-10-15 02:08:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-15 02:08:09,026 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:09,026 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:09,026 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:09,027 INFO L82 PathProgramCache]: Analyzing trace with hash 157676601, now seen corresponding path program 1 times [2019-10-15 02:08:09,027 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:09,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152627169] [2019-10-15 02:08:09,028 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:09,028 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:09,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:08:09,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152627169] [2019-10-15 02:08:09,141 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:09,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:08:09,142 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250468926] [2019-10-15 02:08:09,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:08:09,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:09,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:08:09,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:09,143 INFO L87 Difference]: Start difference. First operand 1111 states and 1486 transitions. Second operand 3 states. [2019-10-15 02:08:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:09,554 INFO L93 Difference]: Finished difference Result 1113 states and 1487 transitions. [2019-10-15 02:08:09,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:09,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2019-10-15 02:08:09,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:09,562 INFO L225 Difference]: With dead ends: 1113 [2019-10-15 02:08:09,563 INFO L226 Difference]: Without dead ends: 1110 [2019-10-15 02:08:09,564 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2019-10-15 02:08:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2019-10-15 02:08:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2019-10-15 02:08:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1484 transitions. [2019-10-15 02:08:09,622 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1484 transitions. Word has length 49 [2019-10-15 02:08:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:09,623 INFO L462 AbstractCegarLoop]: Abstraction has 1110 states and 1484 transitions. [2019-10-15 02:08:09,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:08:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1484 transitions. [2019-10-15 02:08:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-15 02:08:09,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:09,624 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:09,624 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:09,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:09,625 INFO L82 PathProgramCache]: Analyzing trace with hash 592459617, now seen corresponding path program 1 times [2019-10-15 02:08:09,625 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:09,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141207097] [2019-10-15 02:08:09,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:09,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:09,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:08:09,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141207097] [2019-10-15 02:08:09,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:09,751 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:08:09,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800519782] [2019-10-15 02:08:09,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:08:09,752 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:09,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:08:09,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:09,753 INFO L87 Difference]: Start difference. First operand 1110 states and 1484 transitions. Second operand 3 states. [2019-10-15 02:08:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:10,238 INFO L93 Difference]: Finished difference Result 1271 states and 1688 transitions. [2019-10-15 02:08:10,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:10,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-10-15 02:08:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:10,247 INFO L225 Difference]: With dead ends: 1271 [2019-10-15 02:08:10,247 INFO L226 Difference]: Without dead ends: 1229 [2019-10-15 02:08:10,248 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2019-10-15 02:08:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2019-10-15 02:08:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2019-10-15 02:08:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1637 transitions. [2019-10-15 02:08:10,317 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1637 transitions. Word has length 50 [2019-10-15 02:08:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:10,317 INFO L462 AbstractCegarLoop]: Abstraction has 1229 states and 1637 transitions. [2019-10-15 02:08:10,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:08:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1637 transitions. [2019-10-15 02:08:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-15 02:08:10,322 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:10,322 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:10,322 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:10,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:10,322 INFO L82 PathProgramCache]: Analyzing trace with hash 171832610, now seen corresponding path program 1 times [2019-10-15 02:08:10,323 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:10,323 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422235403] [2019-10-15 02:08:10,323 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:10,323 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:10,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:08:10,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422235403] [2019-10-15 02:08:10,455 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:10,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 02:08:10,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468664908] [2019-10-15 02:08:10,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 02:08:10,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:10,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 02:08:10,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:08:10,456 INFO L87 Difference]: Start difference. First operand 1229 states and 1637 transitions. Second operand 6 states. [2019-10-15 02:08:10,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:10,561 INFO L93 Difference]: Finished difference Result 2496 states and 3342 transitions. [2019-10-15 02:08:10,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 02:08:10,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2019-10-15 02:08:10,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:10,572 INFO L225 Difference]: With dead ends: 2496 [2019-10-15 02:08:10,572 INFO L226 Difference]: Without dead ends: 1285 [2019-10-15 02:08:10,579 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 02:08:10,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2019-10-15 02:08:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1285. [2019-10-15 02:08:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1285 states. [2019-10-15 02:08:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1721 transitions. [2019-10-15 02:08:10,720 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1721 transitions. Word has length 90 [2019-10-15 02:08:10,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:10,721 INFO L462 AbstractCegarLoop]: Abstraction has 1285 states and 1721 transitions. [2019-10-15 02:08:10,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 02:08:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1721 transitions. [2019-10-15 02:08:10,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 02:08:10,724 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:10,724 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:10,725 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:10,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:10,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1196424685, now seen corresponding path program 1 times [2019-10-15 02:08:10,725 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:10,726 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506546450] [2019-10-15 02:08:10,726 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:10,726 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:10,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:08:10,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506546450] [2019-10-15 02:08:10,872 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:10,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:08:10,873 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330699055] [2019-10-15 02:08:10,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:08:10,873 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:10,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:08:10,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:08:10,874 INFO L87 Difference]: Start difference. First operand 1285 states and 1721 transitions. Second operand 5 states. [2019-10-15 02:08:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:10,959 INFO L93 Difference]: Finished difference Result 2580 states and 3468 transitions. [2019-10-15 02:08:10,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:08:10,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-15 02:08:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:10,968 INFO L225 Difference]: With dead ends: 2580 [2019-10-15 02:08:10,968 INFO L226 Difference]: Without dead ends: 1313 [2019-10-15 02:08:10,975 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:08:10,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2019-10-15 02:08:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1297. [2019-10-15 02:08:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2019-10-15 02:08:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1739 transitions. [2019-10-15 02:08:11,040 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1739 transitions. Word has length 100 [2019-10-15 02:08:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:11,041 INFO L462 AbstractCegarLoop]: Abstraction has 1297 states and 1739 transitions. [2019-10-15 02:08:11,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:08:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1739 transitions. [2019-10-15 02:08:11,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 02:08:11,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:11,043 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:11,044 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:11,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:11,044 INFO L82 PathProgramCache]: Analyzing trace with hash -305324997, now seen corresponding path program 1 times [2019-10-15 02:08:11,044 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:11,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448147342] [2019-10-15 02:08:11,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:11,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:11,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:08:11,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448147342] [2019-10-15 02:08:11,166 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:11,166 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:08:11,166 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754099696] [2019-10-15 02:08:11,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:08:11,167 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:11,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:08:11,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:08:11,167 INFO L87 Difference]: Start difference. First operand 1297 states and 1739 transitions. Second operand 5 states. [2019-10-15 02:08:11,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:11,259 INFO L93 Difference]: Finished difference Result 2688 states and 3638 transitions. [2019-10-15 02:08:11,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 02:08:11,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-15 02:08:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:11,272 INFO L225 Difference]: With dead ends: 2688 [2019-10-15 02:08:11,272 INFO L226 Difference]: Without dead ends: 1409 [2019-10-15 02:08:11,281 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:08:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2019-10-15 02:08:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1305. [2019-10-15 02:08:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2019-10-15 02:08:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1747 transitions. [2019-10-15 02:08:11,379 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1747 transitions. Word has length 100 [2019-10-15 02:08:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:11,379 INFO L462 AbstractCegarLoop]: Abstraction has 1305 states and 1747 transitions. [2019-10-15 02:08:11,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:08:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1747 transitions. [2019-10-15 02:08:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-15 02:08:11,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:11,384 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:11,384 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:11,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:11,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1070937834, now seen corresponding path program 1 times [2019-10-15 02:08:11,385 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:11,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435948163] [2019-10-15 02:08:11,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:11,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:11,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 02:08:11,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435948163] [2019-10-15 02:08:11,688 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:11,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 02:08:11,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798279010] [2019-10-15 02:08:11,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:08:11,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:11,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:08:11,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:08:11,691 INFO L87 Difference]: Start difference. First operand 1305 states and 1747 transitions. Second operand 4 states. [2019-10-15 02:08:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:11,870 INFO L93 Difference]: Finished difference Result 2628 states and 3560 transitions. [2019-10-15 02:08:11,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 02:08:11,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2019-10-15 02:08:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:11,879 INFO L225 Difference]: With dead ends: 2628 [2019-10-15 02:08:11,879 INFO L226 Difference]: Without dead ends: 1341 [2019-10-15 02:08:11,885 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:08:11,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2019-10-15 02:08:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1309. [2019-10-15 02:08:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2019-10-15 02:08:11,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1751 transitions. [2019-10-15 02:08:11,958 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1751 transitions. Word has length 195 [2019-10-15 02:08:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:11,959 INFO L462 AbstractCegarLoop]: Abstraction has 1309 states and 1751 transitions. [2019-10-15 02:08:11,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:08:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1751 transitions. [2019-10-15 02:08:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-15 02:08:11,965 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:11,965 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:11,965 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:11,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:11,966 INFO L82 PathProgramCache]: Analyzing trace with hash 266596508, now seen corresponding path program 1 times [2019-10-15 02:08:11,966 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:11,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604944366] [2019-10-15 02:08:11,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:11,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:11,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 02:08:12,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604944366] [2019-10-15 02:08:12,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:12,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:08:12,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375179650] [2019-10-15 02:08:12,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:08:12,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:12,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:08:12,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:12,143 INFO L87 Difference]: Start difference. First operand 1309 states and 1751 transitions. Second operand 3 states. [2019-10-15 02:08:12,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:12,254 INFO L93 Difference]: Finished difference Result 2612 states and 3530 transitions. [2019-10-15 02:08:12,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:12,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2019-10-15 02:08:12,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:12,264 INFO L225 Difference]: With dead ends: 2612 [2019-10-15 02:08:12,264 INFO L226 Difference]: Without dead ends: 1321 [2019-10-15 02:08:12,275 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:12,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2019-10-15 02:08:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1313. [2019-10-15 02:08:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2019-10-15 02:08:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1755 transitions. [2019-10-15 02:08:12,362 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1755 transitions. Word has length 206 [2019-10-15 02:08:12,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:12,362 INFO L462 AbstractCegarLoop]: Abstraction has 1313 states and 1755 transitions. [2019-10-15 02:08:12,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:08:12,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1755 transitions. [2019-10-15 02:08:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-15 02:08:12,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:12,367 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:12,367 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash -965286021, now seen corresponding path program 1 times [2019-10-15 02:08:12,368 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:12,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993928092] [2019-10-15 02:08:12,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:12,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:12,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 02:08:12,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993928092] [2019-10-15 02:08:12,637 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:12,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:08:12,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223131711] [2019-10-15 02:08:12,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:08:12,638 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:12,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:08:12,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:08:12,639 INFO L87 Difference]: Start difference. First operand 1313 states and 1755 transitions. Second operand 5 states. [2019-10-15 02:08:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:12,733 INFO L93 Difference]: Finished difference Result 2632 states and 3620 transitions. [2019-10-15 02:08:12,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:08:12,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2019-10-15 02:08:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:12,743 INFO L225 Difference]: With dead ends: 2632 [2019-10-15 02:08:12,743 INFO L226 Difference]: Without dead ends: 1337 [2019-10-15 02:08:12,752 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:08:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2019-10-15 02:08:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1329. [2019-10-15 02:08:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2019-10-15 02:08:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1785 transitions. [2019-10-15 02:08:12,891 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1785 transitions. Word has length 215 [2019-10-15 02:08:12,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:12,892 INFO L462 AbstractCegarLoop]: Abstraction has 1329 states and 1785 transitions. [2019-10-15 02:08:12,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:08:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1785 transitions. [2019-10-15 02:08:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-15 02:08:12,897 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:12,897 INFO L380 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:12,897 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:12,898 INFO L82 PathProgramCache]: Analyzing trace with hash -266816140, now seen corresponding path program 1 times [2019-10-15 02:08:12,898 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:12,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906882569] [2019-10-15 02:08:12,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:12,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:12,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 02:08:13,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906882569] [2019-10-15 02:08:13,094 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:08:13,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:08:13,095 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398322136] [2019-10-15 02:08:13,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:08:13,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:13,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:08:13,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:13,096 INFO L87 Difference]: Start difference. First operand 1329 states and 1785 transitions. Second operand 3 states. [2019-10-15 02:08:13,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:13,167 INFO L93 Difference]: Finished difference Result 2652 states and 3618 transitions. [2019-10-15 02:08:13,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:08:13,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2019-10-15 02:08:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:13,176 INFO L225 Difference]: With dead ends: 2652 [2019-10-15 02:08:13,177 INFO L226 Difference]: Without dead ends: 1341 [2019-10-15 02:08:13,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:08:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2019-10-15 02:08:13,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1333. [2019-10-15 02:08:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2019-10-15 02:08:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1789 transitions. [2019-10-15 02:08:13,253 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1789 transitions. Word has length 237 [2019-10-15 02:08:13,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:13,253 INFO L462 AbstractCegarLoop]: Abstraction has 1333 states and 1789 transitions. [2019-10-15 02:08:13,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:08:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1789 transitions. [2019-10-15 02:08:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2019-10-15 02:08:13,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:13,260 INFO L380 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:13,260 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:13,261 INFO L82 PathProgramCache]: Analyzing trace with hash 276739494, now seen corresponding path program 1 times [2019-10-15 02:08:13,261 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:13,261 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518166686] [2019-10-15 02:08:13,261 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:13,261 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:13,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-10-15 02:08:13,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518166686] [2019-10-15 02:08:13,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526500568] [2019-10-15 02:08:13,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:08:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:14,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 3465 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 02:08:14,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:08:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-10-15 02:08:14,704 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:08:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-10-15 02:08:15,663 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 02:08:15,664 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 12 [2019-10-15 02:08:15,664 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979905876] [2019-10-15 02:08:15,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:08:15,672 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:08:15,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:08:15,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 02:08:15,672 INFO L87 Difference]: Start difference. First operand 1333 states and 1789 transitions. Second operand 4 states. [2019-10-15 02:08:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:08:15,827 INFO L93 Difference]: Finished difference Result 2656 states and 3572 transitions. [2019-10-15 02:08:15,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 02:08:15,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2019-10-15 02:08:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:08:15,845 INFO L225 Difference]: With dead ends: 2656 [2019-10-15 02:08:15,845 INFO L226 Difference]: Without dead ends: 1341 [2019-10-15 02:08:15,855 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 02:08:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2019-10-15 02:08:15,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2019-10-15 02:08:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2019-10-15 02:08:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1799 transitions. [2019-10-15 02:08:15,988 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1799 transitions. Word has length 308 [2019-10-15 02:08:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:08:15,989 INFO L462 AbstractCegarLoop]: Abstraction has 1341 states and 1799 transitions. [2019-10-15 02:08:15,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:08:15,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1799 transitions. [2019-10-15 02:08:15,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2019-10-15 02:08:15,995 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:08:15,996 INFO L380 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:08:16,197 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:08:16,197 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:08:16,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:08:16,198 INFO L82 PathProgramCache]: Analyzing trace with hash 570082696, now seen corresponding path program 1 times [2019-10-15 02:08:16,198 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:08:16,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569740862] [2019-10-15 02:08:16,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:16,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:08:16,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:08:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2019-10-15 02:08:16,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569740862] [2019-10-15 02:08:16,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292074108] [2019-10-15 02:08:16,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:08:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:08:17,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 02:08:17,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:08:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2019-10-15 02:08:17,820 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:08:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2019-10-15 02:08:18,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1585601676] [2019-10-15 02:08:18,746 INFO L162 IcfgInterpreter]: Started Sifa with 202 locations of interest [2019-10-15 02:08:18,746 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:08:18,753 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:08:18,760 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:08:18,761 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:08:20,997 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1380