java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:20:05,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:20:05,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:20:05,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:20:05,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:20:05,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:20:05,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:20:05,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:20:05,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:20:05,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:20:05,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:20:05,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:20:05,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:20:05,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:20:05,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:20:05,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:20:05,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:20:05,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:20:05,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:20:05,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:20:05,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:20:05,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:20:05,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:20:05,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:20:05,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 20:20:05,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 20:20:05,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 20:20:05,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 20:20:05,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 20:20:05,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 20:20:05,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:20:05,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:20:05,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:20:05,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:20:05,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:20:05,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:20:05,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:20:05,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:20:05,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:20:05,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:20:05,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:20:05,719 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 [2019-10-13 20:20:05,733 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:20:05,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:20:05,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:20:05,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:20:05,735 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:20:05,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:20:05,735 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:20:05,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:20:05,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:20:05,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:20:05,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:20:05,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:20:05,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:20:05,737 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:20:05,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:20:05,737 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:20:05,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:20:05,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:20:05,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:20:05,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:20:05,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:20:05,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:20:05,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:20:05,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:20:05,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:20:05,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:20:05,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:20:05,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:20:05,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 20:20:06,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:20:06,057 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:20:06,062 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:20:06,063 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:20:06,064 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:20:06,065 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-10-13 20:20:06,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b545c5c88/f4829074a0e8448da7aaf9cb18d57399/FLAG06f633e6e [2019-10-13 20:20:06,940 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:20:06,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-10-13 20:20:06,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b545c5c88/f4829074a0e8448da7aaf9cb18d57399/FLAG06f633e6e [2019-10-13 20:20:07,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b545c5c88/f4829074a0e8448da7aaf9cb18d57399 [2019-10-13 20:20:07,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:20:07,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:20:07,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:20:07,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:20:07,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:20:07,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:20:07" (1/1) ... [2019-10-13 20:20:07,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d0c811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:07, skipping insertion in model container [2019-10-13 20:20:07,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:20:07" (1/1) ... [2019-10-13 20:20:07,505 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:20:07,615 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:20:08,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:20:08,786 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:20:09,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:20:09,223 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:20:09,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:09 WrapperNode [2019-10-13 20:20:09,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:20:09,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:20:09,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:20:09,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:20:09,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:09" (1/1) ... [2019-10-13 20:20:09,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:09" (1/1) ... [2019-10-13 20:20:09,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:09" (1/1) ... [2019-10-13 20:20:09,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:09" (1/1) ... [2019-10-13 20:20:09,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:09" (1/1) ... [2019-10-13 20:20:09,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:09" (1/1) ... [2019-10-13 20:20:09,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:09" (1/1) ... [2019-10-13 20:20:09,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:20:09,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:20:09,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:20:09,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:20:09,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:09" (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 [2019-10-13 20:20:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:20:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:20:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-10-13 20:20:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-10-13 20:20:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-10-13 20:20:09,725 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-13 20:20:09,726 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-13 20:20:09,726 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-10-13 20:20:09,727 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-10-13 20:20:09,727 INFO L138 BoogieDeclarations]: Found implementation of procedure register_chrdev [2019-10-13 20:20:09,728 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2019-10-13 20:20:09,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 20:20:09,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 20:20:09,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 20:20:09,730 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 20:20:09,730 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-13 20:20:09,733 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 20:20:09,733 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2019-10-13 20:20:09,733 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2019-10-13 20:20:09,734 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2019-10-13 20:20:09,734 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2019-10-13 20:20:09,735 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_wait [2019-10-13 20:20:09,735 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_command [2019-10-13 20:20:09,735 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_completion [2019-10-13 20:20:09,735 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_req_sense [2019-10-13 20:20:09,735 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_atapi [2019-10-13 20:20:09,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_sleep [2019-10-13 20:20:09,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_poll_dsc [2019-10-13 20:20:09,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_media_access_cmd [2019-10-13 20:20:09,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_rewind [2019-10-13 20:20:09,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write_fm [2019-10-13 20:20:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_reset [2019-10-13 20:20:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ready_wait [2019-10-13 20:20:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2019-10-13 20:20:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure xn [2019-10-13 20:20:09,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_identify [2019-10-13 20:20:09,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_probe [2019-10-13 20:20:09,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_detect [2019-10-13 20:20:09,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_open [2019-10-13 20:20:09,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ioctl [2019-10-13 20:20:09,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_release [2019-10-13 20:20:09,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_read [2019-10-13 20:20:09,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write [2019-10-13 20:20:09,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_init [2019-10-13 20:20:09,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_exit [2019-10-13 20:20:09,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:20:09,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_1 [2019-10-13 20:20:09,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_2 [2019-10-13 20:20:09,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_3 [2019-10-13 20:20:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_4 [2019-10-13 20:20:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_5 [2019-10-13 20:20:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_6 [2019-10-13 20:20:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_7 [2019-10-13 20:20:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_8 [2019-10-13 20:20:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2019-10-13 20:20:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2019-10-13 20:20:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_11 [2019-10-13 20:20:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_12 [2019-10-13 20:20:09,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_13 [2019-10-13 20:20:09,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_14 [2019-10-13 20:20:09,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_15 [2019-10-13 20:20:09,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev_16 [2019-10-13 20:20:09,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_17 [2019-10-13 20:20:09,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 20:20:09,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 20:20:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 20:20:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-10-13 20:20:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-10-13 20:20:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-10-13 20:20:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-10-13 20:20:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-13 20:20:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-10-13 20:20:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-10-13 20:20:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-13 20:20:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-13 20:20:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-10-13 20:20:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-10-13 20:20:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-13 20:20:09,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-13 20:20:09,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-10-13 20:20:09,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_pt_mutex [2019-10-13 20:20:09,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_pt_mutex [2019-10-13 20:20:09,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pt_mutex [2019-10-13 20:20:09,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_pt_mutex [2019-10-13 20:20:09,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_pt_mutex [2019-10-13 20:20:09,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_pt_mutex [2019-10-13 20:20:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pt_mutex [2019-10-13 20:20:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 20:20:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 20:20:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __class_create [2019-10-13 20:20:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-10-13 20:20:09,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __register_chrdev [2019-10-13 20:20:09,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __unregister_chrdev [2019-10-13 20:20:09,757 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-13 20:20:09,757 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 20:20:09,758 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2019-10-13 20:20:09,758 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2019-10-13 20:20:09,758 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2019-10-13 20:20:09,758 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 20:20:09,759 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-13 20:20:09,759 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-10-13 20:20:09,760 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 20:20:09,760 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2019-10-13 20:20:09,760 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2019-10-13 20:20:09,760 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2019-10-13 20:20:09,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2019-10-13 20:20:09,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2019-10-13 20:20:09,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2019-10-13 20:20:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2019-10-13 20:20:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_regr [2019-10-13 20:20:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 20:20:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2019-10-13 20:20:09,763 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-13 20:20:09,763 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 20:20:09,764 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 20:20:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 20:20:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:20:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 20:20:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 20:20:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 20:20:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-13 20:20:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-13 20:20:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-10-13 20:20:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-10-13 20:20:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-10-13 20:20:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 20:20:09,768 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-13 20:20:09,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 20:20:09,768 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-13 20:20:09,769 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-10-13 20:20:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-10-13 20:20:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_4 [2019-10-13 20:20:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 20:20:09,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_2 [2019-10-13 20:20:09,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_5 [2019-10-13 20:20:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_7 [2019-10-13 20:20:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2019-10-13 20:20:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2019-10-13 20:20:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_11 [2019-10-13 20:20:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_13 [2019-10-13 20:20:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_15 [2019-10-13 20:20:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-13 20:20:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_1 [2019-10-13 20:20:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_3 [2019-10-13 20:20:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_6 [2019-10-13 20:20:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_8 [2019-10-13 20:20:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_12 [2019-10-13 20:20:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_14 [2019-10-13 20:20:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-10-13 20:20:09,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-10-13 20:20:09,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-10-13 20:20:09,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-10-13 20:20:09,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-10-13 20:20:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pt_mutex [2019-10-13 20:20:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pt_mutex [2019-10-13 20:20:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:20:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-10-13 20:20:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure __register_chrdev [2019-10-13 20:20:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure __unregister_chrdev [2019-10-13 20:20:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure register_chrdev [2019-10-13 20:20:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev_16 [2019-10-13 20:20:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2019-10-13 20:20:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_17 [2019-10-13 20:20:09,789 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-10-13 20:20:09,789 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-10-13 20:20:09,789 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 20:20:09,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 20:20:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 20:20:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 20:20:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 20:20:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 20:20:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 20:20:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 20:20:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure __class_create [2019-10-13 20:20:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2019-10-13 20:20:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2019-10-13 20:20:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2019-10-13 20:20:09,792 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2019-10-13 20:20:09,792 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 20:20:09,792 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-13 20:20:09,792 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-13 20:20:09,793 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 20:20:09,793 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2019-10-13 20:20:09,793 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2019-10-13 20:20:09,793 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_regr [2019-10-13 20:20:09,793 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2019-10-13 20:20:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2019-10-13 20:20:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2019-10-13 20:20:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2019-10-13 20:20:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2019-10-13 20:20:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure pt_open [2019-10-13 20:20:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ioctl [2019-10-13 20:20:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure pt_release [2019-10-13 20:20:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure pt_read [2019-10-13 20:20:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write [2019-10-13 20:20:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure pt_detect [2019-10-13 20:20:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure pt_identify [2019-10-13 20:20:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2019-10-13 20:20:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2019-10-13 20:20:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2019-10-13 20:20:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2019-10-13 20:20:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure pt_wait [2019-10-13 20:20:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 20:20:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure pt_command [2019-10-13 20:20:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure pt_completion [2019-10-13 20:20:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure pt_req_sense [2019-10-13 20:20:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 20:20:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure pt_atapi [2019-10-13 20:20:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure pt_sleep [2019-10-13 20:20:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure pt_poll_dsc [2019-10-13 20:20:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure pt_media_access_cmd [2019-10-13 20:20:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure pt_rewind [2019-10-13 20:20:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write_fm [2019-10-13 20:20:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure pt_reset [2019-10-13 20:20:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ready_wait [2019-10-13 20:20:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2019-10-13 20:20:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure xn [2019-10-13 20:20:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 20:20:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure pt_probe [2019-10-13 20:20:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure pt_init [2019-10-13 20:20:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure pt_exit [2019-10-13 20:20:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 20:20:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 20:20:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:20:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 20:20:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 20:20:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-10-13 20:20:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-10-13 20:20:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-10-13 20:20:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-10-13 20:20:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-13 20:20:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-10-13 20:20:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-13 20:20:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-13 20:20:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-13 20:20:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-13 20:20:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_pt_mutex [2019-10-13 20:20:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_pt_mutex [2019-10-13 20:20:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_pt_mutex [2019-10-13 20:20:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_pt_mutex [2019-10-13 20:20:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_pt_mutex [2019-10-13 20:20:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 20:20:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 20:20:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-13 20:20:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 20:20:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 20:20:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:20:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 20:20:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 20:20:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:20:17,874 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:20:17,874 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 20:20:17,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:20:17 BoogieIcfgContainer [2019-10-13 20:20:17,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:20:17,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:20:17,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:20:17,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:20:17,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:20:07" (1/3) ... [2019-10-13 20:20:17,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6d8185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:20:17, skipping insertion in model container [2019-10-13 20:20:17,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:09" (2/3) ... [2019-10-13 20:20:17,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6d8185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:20:17, skipping insertion in model container [2019-10-13 20:20:17,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:20:17" (3/3) ... [2019-10-13 20:20:17,884 INFO L109 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-10-13 20:20:17,893 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:20:17,903 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:20:17,915 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:20:17,948 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:20:17,949 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:20:17,949 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:20:17,949 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:20:17,949 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:20:17,949 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:20:17,949 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:20:17,949 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:20:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states. [2019-10-13 20:20:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 20:20:17,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:17,998 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] [2019-10-13 20:20:18,000 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:18,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:18,007 INFO L82 PathProgramCache]: Analyzing trace with hash 272456639, now seen corresponding path program 1 times [2019-10-13 20:20:18,017 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:18,017 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503974452] [2019-10-13 20:20:18,017 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:18,018 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:18,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:20:18,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503974452] [2019-10-13 20:20:18,625 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:18,625 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:18,625 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407719660] [2019-10-13 20:20:18,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:18,632 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:18,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:18,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:18,651 INFO L87 Difference]: Start difference. First operand 928 states. Second operand 3 states. [2019-10-13 20:20:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:19,057 INFO L93 Difference]: Finished difference Result 1976 states and 2741 transitions. [2019-10-13 20:20:19,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:19,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-10-13 20:20:19,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:19,099 INFO L225 Difference]: With dead ends: 1976 [2019-10-13 20:20:19,100 INFO L226 Difference]: Without dead ends: 1153 [2019-10-13 20:20:19,111 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 [2019-10-13 20:20:19,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2019-10-13 20:20:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1104. [2019-10-13 20:20:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2019-10-13 20:20:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1486 transitions. [2019-10-13 20:20:19,303 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1486 transitions. Word has length 31 [2019-10-13 20:20:19,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:19,303 INFO L462 AbstractCegarLoop]: Abstraction has 1104 states and 1486 transitions. [2019-10-13 20:20:19,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1486 transitions. [2019-10-13 20:20:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 20:20:19,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:19,314 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] [2019-10-13 20:20:19,314 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:19,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1762829340, now seen corresponding path program 1 times [2019-10-13 20:20:19,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:19,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850091597] [2019-10-13 20:20:19,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:19,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:19,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:20:19,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850091597] [2019-10-13 20:20:19,472 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:19,472 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:20:19,472 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524277148] [2019-10-13 20:20:19,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:20:19,474 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:19,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:20:19,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:20:19,475 INFO L87 Difference]: Start difference. First operand 1104 states and 1486 transitions. Second operand 4 states. [2019-10-13 20:20:21,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:21,025 INFO L93 Difference]: Finished difference Result 2197 states and 2963 transitions. [2019-10-13 20:20:21,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:21,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-10-13 20:20:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:21,034 INFO L225 Difference]: With dead ends: 2197 [2019-10-13 20:20:21,035 INFO L226 Difference]: Without dead ends: 1104 [2019-10-13 20:20:21,040 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 [2019-10-13 20:20:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2019-10-13 20:20:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1104. [2019-10-13 20:20:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2019-10-13 20:20:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1484 transitions. [2019-10-13 20:20:21,126 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1484 transitions. Word has length 31 [2019-10-13 20:20:21,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:21,126 INFO L462 AbstractCegarLoop]: Abstraction has 1104 states and 1484 transitions. [2019-10-13 20:20:21,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:20:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1484 transitions. [2019-10-13 20:20:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-13 20:20:21,129 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:21,129 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] [2019-10-13 20:20:21,129 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:21,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:21,130 INFO L82 PathProgramCache]: Analyzing trace with hash 958019960, now seen corresponding path program 1 times [2019-10-13 20:20:21,130 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:21,130 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476631150] [2019-10-13 20:20:21,130 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:21,130 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:21,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:20:21,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476631150] [2019-10-13 20:20:21,330 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:21,330 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:21,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702813821] [2019-10-13 20:20:21,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:21,331 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:21,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:21,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:21,332 INFO L87 Difference]: Start difference. First operand 1104 states and 1484 transitions. Second operand 3 states. [2019-10-13 20:20:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:21,455 INFO L93 Difference]: Finished difference Result 2225 states and 3007 transitions. [2019-10-13 20:20:21,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:21,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-10-13 20:20:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:21,469 INFO L225 Difference]: With dead ends: 2225 [2019-10-13 20:20:21,469 INFO L226 Difference]: Without dead ends: 1132 [2019-10-13 20:20:21,475 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 [2019-10-13 20:20:21,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2019-10-13 20:20:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1106. [2019-10-13 20:20:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2019-10-13 20:20:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1486 transitions. [2019-10-13 20:20:21,597 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1486 transitions. Word has length 40 [2019-10-13 20:20:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:21,598 INFO L462 AbstractCegarLoop]: Abstraction has 1106 states and 1486 transitions. [2019-10-13 20:20:21,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1486 transitions. [2019-10-13 20:20:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 20:20:21,599 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:21,600 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] [2019-10-13 20:20:21,600 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:21,600 INFO L82 PathProgramCache]: Analyzing trace with hash -721419499, now seen corresponding path program 1 times [2019-10-13 20:20:21,600 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:21,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316426137] [2019-10-13 20:20:21,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:21,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:21,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:20:21,721 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316426137] [2019-10-13 20:20:21,722 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:21,722 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:21,722 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703915818] [2019-10-13 20:20:21,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:21,723 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:21,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:21,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:21,723 INFO L87 Difference]: Start difference. First operand 1106 states and 1486 transitions. Second operand 3 states. [2019-10-13 20:20:22,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:22,247 INFO L93 Difference]: Finished difference Result 2829 states and 3814 transitions. [2019-10-13 20:20:22,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:22,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 20:20:22,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:22,263 INFO L225 Difference]: With dead ends: 2829 [2019-10-13 20:20:22,263 INFO L226 Difference]: Without dead ends: 1734 [2019-10-13 20:20:22,269 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 [2019-10-13 20:20:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2019-10-13 20:20:22,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1730. [2019-10-13 20:20:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1730 states. [2019-10-13 20:20:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2330 transitions. [2019-10-13 20:20:22,375 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2330 transitions. Word has length 46 [2019-10-13 20:20:22,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:22,375 INFO L462 AbstractCegarLoop]: Abstraction has 1730 states and 2330 transitions. [2019-10-13 20:20:22,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2330 transitions. [2019-10-13 20:20:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 20:20:22,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:22,377 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] [2019-10-13 20:20:22,377 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:22,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:22,378 INFO L82 PathProgramCache]: Analyzing trace with hash -217122663, now seen corresponding path program 1 times [2019-10-13 20:20:22,378 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:22,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044933974] [2019-10-13 20:20:22,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:22,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:22,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 20:20:22,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044933974] [2019-10-13 20:20:22,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:22,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:22,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081488680] [2019-10-13 20:20:22,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:22,560 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:22,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:22,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:22,561 INFO L87 Difference]: Start difference. First operand 1730 states and 2330 transitions. Second operand 3 states. [2019-10-13 20:20:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:22,666 INFO L93 Difference]: Finished difference Result 3469 states and 4685 transitions. [2019-10-13 20:20:22,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:22,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2019-10-13 20:20:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:22,683 INFO L225 Difference]: With dead ends: 3469 [2019-10-13 20:20:22,683 INFO L226 Difference]: Without dead ends: 1750 [2019-10-13 20:20:22,693 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 [2019-10-13 20:20:22,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2019-10-13 20:20:22,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1744. [2019-10-13 20:20:22,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1744 states. [2019-10-13 20:20:22,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2350 transitions. [2019-10-13 20:20:22,793 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2350 transitions. Word has length 49 [2019-10-13 20:20:22,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:22,794 INFO L462 AbstractCegarLoop]: Abstraction has 1744 states and 2350 transitions. [2019-10-13 20:20:22,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2350 transitions. [2019-10-13 20:20:22,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 20:20:22,795 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:22,795 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, 1, 1, 1, 1, 1] [2019-10-13 20:20:22,795 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:22,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:22,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1429347774, now seen corresponding path program 1 times [2019-10-13 20:20:22,796 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:22,796 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091866181] [2019-10-13 20:20:22,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:22,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:22,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 20:20:22,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091866181] [2019-10-13 20:20:22,970 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:22,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:22,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964691984] [2019-10-13 20:20:22,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:22,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:22,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:22,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:22,973 INFO L87 Difference]: Start difference. First operand 1744 states and 2350 transitions. Second operand 3 states. [2019-10-13 20:20:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:23,069 INFO L93 Difference]: Finished difference Result 3529 states and 4777 transitions. [2019-10-13 20:20:23,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:23,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2019-10-13 20:20:23,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:23,084 INFO L225 Difference]: With dead ends: 3529 [2019-10-13 20:20:23,084 INFO L226 Difference]: Without dead ends: 1796 [2019-10-13 20:20:23,093 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 [2019-10-13 20:20:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2019-10-13 20:20:23,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1792. [2019-10-13 20:20:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1792 states. [2019-10-13 20:20:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2426 transitions. [2019-10-13 20:20:23,274 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2426 transitions. Word has length 55 [2019-10-13 20:20:23,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:23,275 INFO L462 AbstractCegarLoop]: Abstraction has 1792 states and 2426 transitions. [2019-10-13 20:20:23,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2426 transitions. [2019-10-13 20:20:23,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 20:20:23,276 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:23,277 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, 1, 1, 1, 1, 1] [2019-10-13 20:20:23,277 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:23,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:23,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1358067713, now seen corresponding path program 1 times [2019-10-13 20:20:23,278 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:23,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341444087] [2019-10-13 20:20:23,278 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:23,279 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:23,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 20:20:23,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341444087] [2019-10-13 20:20:23,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:23,433 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:23,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946917121] [2019-10-13 20:20:23,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:23,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:23,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:23,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:23,434 INFO L87 Difference]: Start difference. First operand 1792 states and 2426 transitions. Second operand 3 states. [2019-10-13 20:20:23,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:23,601 INFO L93 Difference]: Finished difference Result 1814 states and 2452 transitions. [2019-10-13 20:20:23,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:23,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2019-10-13 20:20:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:23,615 INFO L225 Difference]: With dead ends: 1814 [2019-10-13 20:20:23,615 INFO L226 Difference]: Without dead ends: 1803 [2019-10-13 20:20:23,617 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 [2019-10-13 20:20:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2019-10-13 20:20:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1792. [2019-10-13 20:20:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1792 states. [2019-10-13 20:20:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2424 transitions. [2019-10-13 20:20:23,737 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2424 transitions. Word has length 55 [2019-10-13 20:20:23,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:23,738 INFO L462 AbstractCegarLoop]: Abstraction has 1792 states and 2424 transitions. [2019-10-13 20:20:23,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:23,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2424 transitions. [2019-10-13 20:20:23,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 20:20:23,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:23,739 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, 1, 1, 1, 1, 1] [2019-10-13 20:20:23,740 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:23,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1300809411, now seen corresponding path program 1 times [2019-10-13 20:20:23,741 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:23,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769261291] [2019-10-13 20:20:23,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:23,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:23,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 20:20:23,896 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769261291] [2019-10-13 20:20:23,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:23,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:23,897 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112343170] [2019-10-13 20:20:23,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:23,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:23,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:23,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:23,899 INFO L87 Difference]: Start difference. First operand 1792 states and 2424 transitions. Second operand 3 states. [2019-10-13 20:20:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:24,765 INFO L93 Difference]: Finished difference Result 1794 states and 2425 transitions. [2019-10-13 20:20:24,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:24,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2019-10-13 20:20:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:24,778 INFO L225 Difference]: With dead ends: 1794 [2019-10-13 20:20:24,779 INFO L226 Difference]: Without dead ends: 1791 [2019-10-13 20:20:24,781 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 [2019-10-13 20:20:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2019-10-13 20:20:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1791. [2019-10-13 20:20:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2019-10-13 20:20:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2422 transitions. [2019-10-13 20:20:24,873 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2422 transitions. Word has length 55 [2019-10-13 20:20:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:24,874 INFO L462 AbstractCegarLoop]: Abstraction has 1791 states and 2422 transitions. [2019-10-13 20:20:24,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2422 transitions. [2019-10-13 20:20:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 20:20:24,875 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:24,875 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, 1, 1, 1, 1, 1, 1] [2019-10-13 20:20:24,875 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:24,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:24,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1670943529, now seen corresponding path program 1 times [2019-10-13 20:20:24,876 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:24,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981910293] [2019-10-13 20:20:24,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:24,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:24,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 20:20:25,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981910293] [2019-10-13 20:20:25,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:25,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:25,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554114514] [2019-10-13 20:20:25,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:25,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:25,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:25,017 INFO L87 Difference]: Start difference. First operand 1791 states and 2422 transitions. Second operand 3 states. [2019-10-13 20:20:25,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:25,777 INFO L93 Difference]: Finished difference Result 1793 states and 2423 transitions. [2019-10-13 20:20:25,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:25,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2019-10-13 20:20:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:25,790 INFO L225 Difference]: With dead ends: 1793 [2019-10-13 20:20:25,791 INFO L226 Difference]: Without dead ends: 1790 [2019-10-13 20:20:25,792 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 [2019-10-13 20:20:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2019-10-13 20:20:25,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1790. [2019-10-13 20:20:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1790 states. [2019-10-13 20:20:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2420 transitions. [2019-10-13 20:20:25,877 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2420 transitions. Word has length 56 [2019-10-13 20:20:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:25,878 INFO L462 AbstractCegarLoop]: Abstraction has 1790 states and 2420 transitions. [2019-10-13 20:20:25,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2420 transitions. [2019-10-13 20:20:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 20:20:25,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:25,879 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:20:25,879 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:25,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:25,880 INFO L82 PathProgramCache]: Analyzing trace with hash -260194432, now seen corresponding path program 1 times [2019-10-13 20:20:25,880 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:25,880 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8421965] [2019-10-13 20:20:25,880 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:25,880 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:25,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 20:20:26,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8421965] [2019-10-13 20:20:26,083 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:26,083 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:26,083 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131528888] [2019-10-13 20:20:26,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:26,084 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:26,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:26,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:26,085 INFO L87 Difference]: Start difference. First operand 1790 states and 2420 transitions. Second operand 3 states. [2019-10-13 20:20:26,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:26,590 INFO L93 Difference]: Finished difference Result 1792 states and 2421 transitions. [2019-10-13 20:20:26,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:26,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-10-13 20:20:26,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:26,602 INFO L225 Difference]: With dead ends: 1792 [2019-10-13 20:20:26,602 INFO L226 Difference]: Without dead ends: 1789 [2019-10-13 20:20:26,604 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 [2019-10-13 20:20:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2019-10-13 20:20:26,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1789. [2019-10-13 20:20:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1789 states. [2019-10-13 20:20:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2418 transitions. [2019-10-13 20:20:26,696 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2418 transitions. Word has length 57 [2019-10-13 20:20:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:26,697 INFO L462 AbstractCegarLoop]: Abstraction has 1789 states and 2418 transitions. [2019-10-13 20:20:26,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2418 transitions. [2019-10-13 20:20:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 20:20:26,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:26,699 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:20:26,699 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:26,700 INFO L82 PathProgramCache]: Analyzing trace with hash 523359482, now seen corresponding path program 1 times [2019-10-13 20:20:26,700 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:26,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969527867] [2019-10-13 20:20:26,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:26,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:26,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 20:20:26,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969527867] [2019-10-13 20:20:26,866 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:26,866 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:26,866 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205612550] [2019-10-13 20:20:26,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:26,867 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:26,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:26,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:26,868 INFO L87 Difference]: Start difference. First operand 1789 states and 2418 transitions. Second operand 3 states. [2019-10-13 20:20:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:27,403 INFO L93 Difference]: Finished difference Result 2224 states and 2976 transitions. [2019-10-13 20:20:27,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:27,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-10-13 20:20:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:27,420 INFO L225 Difference]: With dead ends: 2224 [2019-10-13 20:20:27,420 INFO L226 Difference]: Without dead ends: 2174 [2019-10-13 20:20:27,422 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 [2019-10-13 20:20:27,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2019-10-13 20:20:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2174. [2019-10-13 20:20:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2019-10-13 20:20:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 2916 transitions. [2019-10-13 20:20:27,553 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 2916 transitions. Word has length 58 [2019-10-13 20:20:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:27,554 INFO L462 AbstractCegarLoop]: Abstraction has 2174 states and 2916 transitions. [2019-10-13 20:20:27,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 2916 transitions. [2019-10-13 20:20:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 20:20:27,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:27,565 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, 1, 1, 1, 1, 1] [2019-10-13 20:20:27,565 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:27,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:27,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1210973165, now seen corresponding path program 1 times [2019-10-13 20:20:27,566 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:27,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197183934] [2019-10-13 20:20:27,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:27,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:27,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 20:20:27,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197183934] [2019-10-13 20:20:27,708 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:27,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:20:27,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653531392] [2019-10-13 20:20:27,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:20:27,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:27,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:20:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:20:27,709 INFO L87 Difference]: Start difference. First operand 2174 states and 2916 transitions. Second operand 5 states. [2019-10-13 20:20:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:27,830 INFO L93 Difference]: Finished difference Result 4351 states and 5841 transitions. [2019-10-13 20:20:27,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 20:20:27,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2019-10-13 20:20:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:27,846 INFO L225 Difference]: With dead ends: 4351 [2019-10-13 20:20:27,847 INFO L226 Difference]: Without dead ends: 2188 [2019-10-13 20:20:27,857 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 [2019-10-13 20:20:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2019-10-13 20:20:28,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2188. [2019-10-13 20:20:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2188 states. [2019-10-13 20:20:28,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2930 transitions. [2019-10-13 20:20:28,091 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2930 transitions. Word has length 105 [2019-10-13 20:20:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:28,091 INFO L462 AbstractCegarLoop]: Abstraction has 2188 states and 2930 transitions. [2019-10-13 20:20:28,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:20:28,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2930 transitions. [2019-10-13 20:20:28,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 20:20:28,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:28,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:20:28,096 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:28,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1551773475, now seen corresponding path program 1 times [2019-10-13 20:20:28,097 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:28,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324479055] [2019-10-13 20:20:28,097 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:28,097 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:28,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 20:20:28,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324479055] [2019-10-13 20:20:28,242 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:28,242 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:20:28,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114475910] [2019-10-13 20:20:28,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:20:28,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:28,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:20:28,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:20:28,245 INFO L87 Difference]: Start difference. First operand 2188 states and 2930 transitions. Second operand 4 states. [2019-10-13 20:20:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:32,649 INFO L93 Difference]: Finished difference Result 4371 states and 5877 transitions. [2019-10-13 20:20:32,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:20:32,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-10-13 20:20:32,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:32,663 INFO L225 Difference]: With dead ends: 4371 [2019-10-13 20:20:32,663 INFO L226 Difference]: Without dead ends: 2194 [2019-10-13 20:20:32,673 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:20:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2019-10-13 20:20:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2192. [2019-10-13 20:20:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2192 states. [2019-10-13 20:20:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 2934 transitions. [2019-10-13 20:20:32,782 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 2934 transitions. Word has length 115 [2019-10-13 20:20:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:32,783 INFO L462 AbstractCegarLoop]: Abstraction has 2192 states and 2934 transitions. [2019-10-13 20:20:32,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:20:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 2934 transitions. [2019-10-13 20:20:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 20:20:32,790 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:32,791 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 20:20:32,791 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:32,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1988568606, now seen corresponding path program 1 times [2019-10-13 20:20:32,792 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:32,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500096254] [2019-10-13 20:20:32,799 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:32,799 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:32,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 20:20:32,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500096254] [2019-10-13 20:20:32,998 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:32,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:20:32,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085103610] [2019-10-13 20:20:32,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:20:32,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:32,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:20:32,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:20:33,000 INFO L87 Difference]: Start difference. First operand 2192 states and 2934 transitions. Second operand 4 states. [2019-10-13 20:20:33,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:33,115 INFO L93 Difference]: Finished difference Result 4415 states and 5945 transitions. [2019-10-13 20:20:33,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:20:33,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-10-13 20:20:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:33,129 INFO L225 Difference]: With dead ends: 4415 [2019-10-13 20:20:33,129 INFO L226 Difference]: Without dead ends: 2234 [2019-10-13 20:20:33,142 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 [2019-10-13 20:20:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2019-10-13 20:20:33,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2196. [2019-10-13 20:20:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2196 states. [2019-10-13 20:20:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2938 transitions. [2019-10-13 20:20:33,251 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2938 transitions. Word has length 164 [2019-10-13 20:20:33,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:33,251 INFO L462 AbstractCegarLoop]: Abstraction has 2196 states and 2938 transitions. [2019-10-13 20:20:33,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:20:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2938 transitions. [2019-10-13 20:20:33,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 20:20:33,258 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:33,258 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 20:20:33,258 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:33,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:33,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1683911757, now seen corresponding path program 1 times [2019-10-13 20:20:33,259 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:33,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935256902] [2019-10-13 20:20:33,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:33,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:33,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 20:20:33,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935256902] [2019-10-13 20:20:33,543 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:33,544 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:33,544 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617644642] [2019-10-13 20:20:33,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:33,545 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:33,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:33,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:33,546 INFO L87 Difference]: Start difference. First operand 2196 states and 2938 transitions. Second operand 3 states. [2019-10-13 20:20:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:33,693 INFO L93 Difference]: Finished difference Result 4393 states and 5907 transitions. [2019-10-13 20:20:33,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:33,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 20:20:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:33,729 INFO L225 Difference]: With dead ends: 4393 [2019-10-13 20:20:33,729 INFO L226 Difference]: Without dead ends: 2208 [2019-10-13 20:20:33,752 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 [2019-10-13 20:20:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2019-10-13 20:20:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2200. [2019-10-13 20:20:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2019-10-13 20:20:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2942 transitions. [2019-10-13 20:20:33,881 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2942 transitions. Word has length 175 [2019-10-13 20:20:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:33,881 INFO L462 AbstractCegarLoop]: Abstraction has 2200 states and 2942 transitions. [2019-10-13 20:20:33,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:33,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2942 transitions. [2019-10-13 20:20:33,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 20:20:33,887 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:33,888 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 20:20:33,888 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:33,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:33,889 INFO L82 PathProgramCache]: Analyzing trace with hash -665722229, now seen corresponding path program 1 times [2019-10-13 20:20:33,889 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:33,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181863427] [2019-10-13 20:20:33,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:33,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:33,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 20:20:34,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181863427] [2019-10-13 20:20:34,099 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:34,100 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:20:34,100 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533415048] [2019-10-13 20:20:34,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:20:34,101 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:34,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:20:34,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:20:34,102 INFO L87 Difference]: Start difference. First operand 2200 states and 2942 transitions. Second operand 5 states. [2019-10-13 20:20:34,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:34,201 INFO L93 Difference]: Finished difference Result 4421 states and 5931 transitions. [2019-10-13 20:20:34,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 20:20:34,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2019-10-13 20:20:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:34,213 INFO L225 Difference]: With dead ends: 4421 [2019-10-13 20:20:34,213 INFO L226 Difference]: Without dead ends: 2232 [2019-10-13 20:20:34,223 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 [2019-10-13 20:20:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2019-10-13 20:20:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2212. [2019-10-13 20:20:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2019-10-13 20:20:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2960 transitions. [2019-10-13 20:20:34,316 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2960 transitions. Word has length 186 [2019-10-13 20:20:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:34,317 INFO L462 AbstractCegarLoop]: Abstraction has 2212 states and 2960 transitions. [2019-10-13 20:20:34,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:20:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2960 transitions. [2019-10-13 20:20:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 20:20:34,323 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:34,323 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 20:20:34,324 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:34,324 INFO L82 PathProgramCache]: Analyzing trace with hash 882115653, now seen corresponding path program 1 times [2019-10-13 20:20:34,324 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:34,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600991682] [2019-10-13 20:20:34,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:34,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:34,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 20:20:34,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600991682] [2019-10-13 20:20:34,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:34,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:20:34,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052843416] [2019-10-13 20:20:34,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:20:34,521 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:34,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:20:34,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:20:34,522 INFO L87 Difference]: Start difference. First operand 2212 states and 2960 transitions. Second operand 5 states. [2019-10-13 20:20:34,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:34,717 INFO L93 Difference]: Finished difference Result 4533 states and 6105 transitions. [2019-10-13 20:20:34,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 20:20:34,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2019-10-13 20:20:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:34,730 INFO L225 Difference]: With dead ends: 4533 [2019-10-13 20:20:34,731 INFO L226 Difference]: Without dead ends: 2332 [2019-10-13 20:20:34,739 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 [2019-10-13 20:20:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2019-10-13 20:20:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2220. [2019-10-13 20:20:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2220 states. [2019-10-13 20:20:34,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2968 transitions. [2019-10-13 20:20:34,838 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2968 transitions. Word has length 186 [2019-10-13 20:20:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:34,839 INFO L462 AbstractCegarLoop]: Abstraction has 2220 states and 2968 transitions. [2019-10-13 20:20:34,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:20:34,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2968 transitions. [2019-10-13 20:20:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-13 20:20:34,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:34,846 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:20:34,847 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:34,847 INFO L82 PathProgramCache]: Analyzing trace with hash -642019834, now seen corresponding path program 1 times [2019-10-13 20:20:34,847 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:34,848 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459209956] [2019-10-13 20:20:34,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:34,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:34,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 20:20:35,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459209956] [2019-10-13 20:20:35,156 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:35,156 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:20:35,156 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971842215] [2019-10-13 20:20:35,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:20:35,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:35,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:20:35,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:20:35,158 INFO L87 Difference]: Start difference. First operand 2220 states and 2968 transitions. Second operand 5 states. [2019-10-13 20:20:35,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:35,301 INFO L93 Difference]: Finished difference Result 4459 states and 6115 transitions. [2019-10-13 20:20:35,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 20:20:35,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2019-10-13 20:20:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:35,332 INFO L225 Difference]: With dead ends: 4459 [2019-10-13 20:20:35,333 INFO L226 Difference]: Without dead ends: 2250 [2019-10-13 20:20:35,344 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 [2019-10-13 20:20:35,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2019-10-13 20:20:35,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2240. [2019-10-13 20:20:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2240 states. [2019-10-13 20:20:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3007 transitions. [2019-10-13 20:20:35,479 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3007 transitions. Word has length 248 [2019-10-13 20:20:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:35,482 INFO L462 AbstractCegarLoop]: Abstraction has 2240 states and 3007 transitions. [2019-10-13 20:20:35,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:20:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3007 transitions. [2019-10-13 20:20:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-10-13 20:20:35,490 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:35,491 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:20:35,491 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:35,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:35,492 INFO L82 PathProgramCache]: Analyzing trace with hash 216925833, now seen corresponding path program 1 times [2019-10-13 20:20:35,492 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:35,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628607452] [2019-10-13 20:20:35,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:35,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:35,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-10-13 20:20:35,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628607452] [2019-10-13 20:20:35,782 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:35,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:20:35,785 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105275156] [2019-10-13 20:20:35,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:20:35,787 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:35,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:20:35,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:20:35,788 INFO L87 Difference]: Start difference. First operand 2240 states and 3007 transitions. Second operand 5 states. [2019-10-13 20:20:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:35,930 INFO L93 Difference]: Finished difference Result 4489 states and 6164 transitions. [2019-10-13 20:20:35,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 20:20:35,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 292 [2019-10-13 20:20:35,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:35,946 INFO L225 Difference]: With dead ends: 4489 [2019-10-13 20:20:35,947 INFO L226 Difference]: Without dead ends: 2260 [2019-10-13 20:20:35,967 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 [2019-10-13 20:20:35,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2019-10-13 20:20:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2250. [2019-10-13 20:20:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2019-10-13 20:20:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 3017 transitions. [2019-10-13 20:20:36,266 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 3017 transitions. Word has length 292 [2019-10-13 20:20:36,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:36,266 INFO L462 AbstractCegarLoop]: Abstraction has 2250 states and 3017 transitions. [2019-10-13 20:20:36,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:20:36,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 3017 transitions. [2019-10-13 20:20:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-13 20:20:36,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:36,275 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:20:36,276 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash 211763053, now seen corresponding path program 1 times [2019-10-13 20:20:36,276 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:36,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547217862] [2019-10-13 20:20:36,277 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:36,277 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:36,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 20:20:36,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547217862] [2019-10-13 20:20:36,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:36,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:36,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759099238] [2019-10-13 20:20:36,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:36,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:36,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:36,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:36,556 INFO L87 Difference]: Start difference. First operand 2250 states and 3017 transitions. Second operand 3 states. [2019-10-13 20:20:36,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:36,661 INFO L93 Difference]: Finished difference Result 4574 states and 6343 transitions. [2019-10-13 20:20:36,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:36,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2019-10-13 20:20:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:36,672 INFO L225 Difference]: With dead ends: 4574 [2019-10-13 20:20:36,672 INFO L226 Difference]: Without dead ends: 2335 [2019-10-13 20:20:36,682 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 [2019-10-13 20:20:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2019-10-13 20:20:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2305. [2019-10-13 20:20:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2019-10-13 20:20:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3102 transitions. [2019-10-13 20:20:36,788 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3102 transitions. Word has length 283 [2019-10-13 20:20:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:36,792 INFO L462 AbstractCegarLoop]: Abstraction has 2305 states and 3102 transitions. [2019-10-13 20:20:36,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:36,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3102 transitions. [2019-10-13 20:20:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-13 20:20:36,800 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:36,800 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:20:36,801 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:36,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:36,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2041232297, now seen corresponding path program 1 times [2019-10-13 20:20:36,801 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:36,802 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809817248] [2019-10-13 20:20:36,802 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:36,802 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:36,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 20:20:37,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809817248] [2019-10-13 20:20:37,070 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:20:37,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:20:37,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907857608] [2019-10-13 20:20:37,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:20:37,071 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:20:37,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:20:37,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:20:37,071 INFO L87 Difference]: Start difference. First operand 2305 states and 3102 transitions. Second operand 3 states. [2019-10-13 20:20:37,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:20:37,165 INFO L93 Difference]: Finished difference Result 4619 states and 6289 transitions. [2019-10-13 20:20:37,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:20:37,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 281 [2019-10-13 20:20:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:20:37,176 INFO L225 Difference]: With dead ends: 4619 [2019-10-13 20:20:37,176 INFO L226 Difference]: Without dead ends: 2325 [2019-10-13 20:20:37,187 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 [2019-10-13 20:20:37,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2019-10-13 20:20:37,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2310. [2019-10-13 20:20:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2019-10-13 20:20:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 3107 transitions. [2019-10-13 20:20:37,367 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 3107 transitions. Word has length 281 [2019-10-13 20:20:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:20:37,368 INFO L462 AbstractCegarLoop]: Abstraction has 2310 states and 3107 transitions. [2019-10-13 20:20:37,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:20:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 3107 transitions. [2019-10-13 20:20:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2019-10-13 20:20:37,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:20:37,377 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:20:37,378 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:20:37,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:20:37,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1350276613, now seen corresponding path program 1 times [2019-10-13 20:20:37,378 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:20:37,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681338898] [2019-10-13 20:20:37,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:37,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:20:37,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:20:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:20:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-10-13 20:20:37,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681338898] [2019-10-13 20:20:37,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393453008] [2019-10-13 20:20:37,807 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