java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:08:05,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:08:05,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:08:05,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:08:05,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:08:05,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:08:05,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:08:06,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:08:06,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:08:06,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:08:06,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:08:06,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:08:06,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:08:06,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:08:06,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:08:06,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:08:06,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:08:06,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:08:06,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:08:06,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:08:06,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:08:06,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:08:06,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:08:06,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:08:06,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:08:06,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:08:06,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:08:06,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:08:06,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:08:06,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:08:06,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:08:06,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:08:06,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:08:06,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:08:06,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:08:06,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:08:06,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:08:06,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:08:06,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:08:06,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:08:06,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:08:06,054 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 22:08:06,069 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:08:06,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:08:06,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:08:06,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:08:06,072 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:08:06,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:08:06,073 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:08:06,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:08:06,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:08:06,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:08:06,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:08:06,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:08:06,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:08:06,075 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:08:06,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:08:06,076 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:08:06,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:08:06,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:08:06,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:08:06,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:08:06,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:08:06,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:08:06,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:08:06,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:08:06,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:08:06,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:08:06,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:08:06,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:08:06,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:08:06,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:08:06,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:08:06,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:08:06,400 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:08:06,401 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:08:06,401 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2019-10-13 22:08:06,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7de0db41/2512276c298e48fe815165e2af09049d/FLAG4fd298434 [2019-10-13 22:08:07,258 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:08:07,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2019-10-13 22:08:07,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7de0db41/2512276c298e48fe815165e2af09049d/FLAG4fd298434 [2019-10-13 22:08:07,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7de0db41/2512276c298e48fe815165e2af09049d [2019-10-13 22:08:07,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:08:07,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:08:07,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:08:07,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:08:07,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:08:07,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:08:07" (1/1) ... [2019-10-13 22:08:07,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b77c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:07, skipping insertion in model container [2019-10-13 22:08:07,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:08:07" (1/1) ... [2019-10-13 22:08:07,826 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:08:07,940 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:08:09,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:08:09,454 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:08:09,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:08:10,024 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:08:10,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:10 WrapperNode [2019-10-13 22:08:10,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:08:10,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:08:10,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:08:10,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:08:10,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:10" (1/1) ... [2019-10-13 22:08:10,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:10" (1/1) ... [2019-10-13 22:08:10,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:10" (1/1) ... [2019-10-13 22:08:10,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:10" (1/1) ... [2019-10-13 22:08:10,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:10" (1/1) ... [2019-10-13 22:08:10,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:10" (1/1) ... [2019-10-13 22:08:10,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:10" (1/1) ... [2019-10-13 22:08:10,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:08:10,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:08:10,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:08:10,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:08:10,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:10" (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 22:08:10,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:08:10,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:08:10,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2019-10-13 22:08:10,435 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2019-10-13 22:08:10,435 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2019-10-13 22:08:10,436 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-10-13 22:08:10,437 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-13 22:08:10,437 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-13 22:08:10,437 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2019-10-13 22:08:10,438 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ti_thread_flag [2019-10-13 22:08:10,438 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 22:08:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-13 22:08:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-13 22:08:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2019-10-13 22:08:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-13 22:08:10,440 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-10-13 22:08:10,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-10-13 22:08:10,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-10-13 22:08:10,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_out [2019-10-13 22:08:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-13 22:08:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 22:08:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2019-10-13 22:08:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-10-13 22:08:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure test_tsk_thread_flag [2019-10-13 22:08:10,445 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2019-10-13 22:08:10,445 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2019-10-13 22:08:10,445 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2019-10-13 22:08:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-13 22:08:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-13 22:08:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-10-13 22:08:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-13 22:08:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:08:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 22:08:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2019-10-13 22:08:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_report [2019-10-13 22:08:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_report [2019-10-13 22:08:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_callback [2019-10-13 22:08:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_write_callback [2019-10-13 22:08:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_delete [2019-10-13 22:08:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure read_index [2019-10-13 22:08:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_read [2019-10-13 22:08:10,449 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_write [2019-10-13 22:08:10,449 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_ioctl [2019-10-13 22:08:10,449 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_open [2019-10-13 22:08:10,449 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_release [2019-10-13 22:08:10,449 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_poll [2019-10-13 22:08:10,449 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_devnode [2019-10-13 22:08:10,449 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_probe [2019-10-13 22:08:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_disconnect [2019-10-13 22:08:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_init [2019-10-13 22:08:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_exit [2019-10-13 22:08:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2019-10-13 22:08:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2019-10-13 22:08:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:08:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2019-10-13 22:08:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2019-10-13 22:08:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-10-13 22:08:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-10-13 22:08:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-13 22:08:10,452 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-13 22:08:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:08:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-10-13 22:08:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:08:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2019-10-13 22:08:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 22:08:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2019-10-13 22:08:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-13 22:08:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 22:08:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-13 22:08:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-13 22:08:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-13 22:08:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-13 22:08:10,455 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-13 22:08:10,456 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-13 22:08:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2019-10-13 22:08:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure kasprintf [2019-10-13 22:08:10,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2019-10-13 22:08:10,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:08:10,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2019-10-13 22:08:10,460 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 22:08:10,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2019-10-13 22:08:10,462 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 22:08:10,462 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2019-10-13 22:08:10,462 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:08:10,462 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2019-10-13 22:08:10,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2019-10-13 22:08:10,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 22:08:10,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2019-10-13 22:08:10,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_find_interface [2019-10-13 22:08:10,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-13 22:08:10,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2019-10-13 22:08:10,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 22:08:10,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2019-10-13 22:08:10,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-10-13 22:08:10,465 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-13 22:08:10,466 INFO L138 BoogieDeclarations]: Found implementation of procedure autoremove_wake_function [2019-10-13 22:08:10,466 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:08:10,466 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:08:10,466 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 22:08:10,466 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 22:08:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:08:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2019-10-13 22:08:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:08:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-13 22:08:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 22:08:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure kasprintf [2019-10-13 22:08:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2019-10-13 22:08:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2019-10-13 22:08:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 22:08:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 22:08:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2019-10-13 22:08:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-13 22:08:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-10-13 22:08:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:08:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-13 22:08:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:08:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-13 22:08:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2019-10-13 22:08:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure test_ti_thread_flag [2019-10-13 22:08:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 22:08:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-13 22:08:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-13 22:08:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 22:08:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-13 22:08:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-13 22:08:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-10-13 22:08:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2019-10-13 22:08:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2019-10-13 22:08:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2019-10-13 22:08:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure autoremove_wake_function [2019-10-13 22:08:10,475 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2019-10-13 22:08:10,476 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2019-10-13 22:08:10,477 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 22:08:10,478 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:08:10,482 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2019-10-13 22:08:10,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:08:10,483 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2019-10-13 22:08:10,483 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2019-10-13 22:08:10,483 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-13 22:08:10,484 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-10-13 22:08:10,484 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-10-13 22:08:10,484 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-10-13 22:08:10,484 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_out [2019-10-13 22:08:10,485 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 22:08:10,492 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-13 22:08:10,492 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-13 22:08:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:08:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 22:08:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2019-10-13 22:08:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-13 22:08:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-13 22:08:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-13 22:08:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-13 22:08:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-10-13 22:08:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-10-13 22:08:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2019-10-13 22:08:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure test_tsk_thread_flag [2019-10-13 22:08:10,495 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2019-10-13 22:08:10,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2019-10-13 22:08:10,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2019-10-13 22:08:10,495 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-13 22:08:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_interface [2019-10-13 22:08:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 22:08:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-13 22:08:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 22:08:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2019-10-13 22:08:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2019-10-13 22:08:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-10-13 22:08:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:08:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-13 22:08:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-13 22:08:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-10-13 22:08:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-13 22:08:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-10-13 22:08:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-10-13 22:08:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2019-10-13 22:08:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2019-10-13 22:08:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-13 22:08:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:08:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:08:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 22:08:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2019-10-13 22:08:10,499 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2019-10-13 22:08:10,499 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_report [2019-10-13 22:08:10,499 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_report [2019-10-13 22:08:10,499 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_callback [2019-10-13 22:08:10,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 22:08:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_write_callback [2019-10-13 22:08:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_delete [2019-10-13 22:08:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure read_index [2019-10-13 22:08:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_read [2019-10-13 22:08:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:08:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_write [2019-10-13 22:08:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_ioctl [2019-10-13 22:08:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 22:08:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_open [2019-10-13 22:08:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_release [2019-10-13 22:08:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_poll [2019-10-13 22:08:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_devnode [2019-10-13 22:08:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_probe [2019-10-13 22:08:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_disconnect [2019-10-13 22:08:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_init [2019-10-13 22:08:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_exit [2019-10-13 22:08:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:08:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2019-10-13 22:08:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:08:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:08:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:08:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2019-10-13 22:08:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2019-10-13 22:08:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2019-10-13 22:08:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:08:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:08:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:08:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:08:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:08:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:08:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:08:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:08:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 22:08:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 22:08:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 22:08:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 22:08:11,555 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 22:08:11,576 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2019-10-13 22:08:11,577 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2019-10-13 22:08:11,630 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 22:08:11,875 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2019-10-13 22:08:11,875 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2019-10-13 22:08:11,990 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2019-10-13 22:08:13,611 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 22:08:13,711 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2019-10-13 22:08:13,711 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2019-10-13 22:08:13,825 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 22:08:14,173 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2019-10-13 22:08:14,173 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2019-10-13 22:08:14,317 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 22:08:14,380 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2019-10-13 22:08:14,380 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2019-10-13 22:08:17,147 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:08:17,148 INFO L284 CfgBuilder]: Removed 27 assume(true) statements. [2019-10-13 22:08:17,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:08:17 BoogieIcfgContainer [2019-10-13 22:08:17,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:08:17,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:08:17,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:08:17,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:08:17,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:08:07" (1/3) ... [2019-10-13 22:08:17,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6542416c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:08:17, skipping insertion in model container [2019-10-13 22:08:17,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:10" (2/3) ... [2019-10-13 22:08:17,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6542416c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:08:17, skipping insertion in model container [2019-10-13 22:08:17,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:08:17" (3/3) ... [2019-10-13 22:08:17,160 INFO L109 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2019-10-13 22:08:17,175 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:08:17,192 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:08:17,206 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:08:17,250 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:08:17,250 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:08:17,250 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:08:17,251 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:08:17,251 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:08:17,252 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:08:17,256 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:08:17,256 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:08:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states. [2019-10-13 22:08:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 22:08:17,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:17,313 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] [2019-10-13 22:08:17,316 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:17,322 INFO L82 PathProgramCache]: Analyzing trace with hash 186770747, now seen corresponding path program 1 times [2019-10-13 22:08:17,333 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:17,333 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139494201] [2019-10-13 22:08:17,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:17,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:17,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:17,992 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 22:08:17,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139494201] [2019-10-13 22:08:17,994 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:17,994 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:17,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978667834] [2019-10-13 22:08:18,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:18,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:18,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:18,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:18,021 INFO L87 Difference]: Start difference. First operand 675 states. Second operand 3 states. [2019-10-13 22:08:18,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:18,237 INFO L93 Difference]: Finished difference Result 1772 states and 2436 transitions. [2019-10-13 22:08:18,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:18,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 22:08:18,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:18,286 INFO L225 Difference]: With dead ends: 1772 [2019-10-13 22:08:18,287 INFO L226 Difference]: Without dead ends: 1145 [2019-10-13 22:08:18,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:18,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2019-10-13 22:08:18,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1141. [2019-10-13 22:08:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2019-10-13 22:08:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1508 transitions. [2019-10-13 22:08:18,526 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1508 transitions. Word has length 25 [2019-10-13 22:08:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:18,527 INFO L462 AbstractCegarLoop]: Abstraction has 1141 states and 1508 transitions. [2019-10-13 22:08:18,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1508 transitions. [2019-10-13 22:08:18,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 22:08:18,528 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:18,528 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] [2019-10-13 22:08:18,529 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:18,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:18,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1494457653, now seen corresponding path program 1 times [2019-10-13 22:08:18,529 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:18,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589297443] [2019-10-13 22:08:18,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:18,530 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:18,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:18,772 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 22:08:18,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589297443] [2019-10-13 22:08:18,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:18,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:18,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550582542] [2019-10-13 22:08:18,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:18,782 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:18,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:18,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:18,783 INFO L87 Difference]: Start difference. First operand 1141 states and 1508 transitions. Second operand 3 states. [2019-10-13 22:08:18,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:18,895 INFO L93 Difference]: Finished difference Result 1717 states and 2271 transitions. [2019-10-13 22:08:18,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:18,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-10-13 22:08:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:18,912 INFO L225 Difference]: With dead ends: 1717 [2019-10-13 22:08:18,912 INFO L226 Difference]: Without dead ends: 1705 [2019-10-13 22:08:18,914 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:18,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2019-10-13 22:08:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1700. [2019-10-13 22:08:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1700 states. [2019-10-13 22:08:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2251 transitions. [2019-10-13 22:08:19,028 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2251 transitions. Word has length 26 [2019-10-13 22:08:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:19,029 INFO L462 AbstractCegarLoop]: Abstraction has 1700 states and 2251 transitions. [2019-10-13 22:08:19,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2251 transitions. [2019-10-13 22:08:19,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 22:08:19,034 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:19,034 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 22:08:19,035 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:19,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:19,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1487356867, now seen corresponding path program 1 times [2019-10-13 22:08:19,036 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:19,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922558034] [2019-10-13 22:08:19,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:19,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:19,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:19,341 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 22:08:19,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922558034] [2019-10-13 22:08:19,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:19,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:19,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279855999] [2019-10-13 22:08:19,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:19,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:19,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:19,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:19,344 INFO L87 Difference]: Start difference. First operand 1700 states and 2251 transitions. Second operand 3 states. [2019-10-13 22:08:19,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:19,448 INFO L93 Difference]: Finished difference Result 3476 states and 4652 transitions. [2019-10-13 22:08:19,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:19,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2019-10-13 22:08:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:19,460 INFO L225 Difference]: With dead ends: 3476 [2019-10-13 22:08:19,461 INFO L226 Difference]: Without dead ends: 1797 [2019-10-13 22:08:19,467 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 22:08:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2019-10-13 22:08:19,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1793. [2019-10-13 22:08:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2019-10-13 22:08:19,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2401 transitions. [2019-10-13 22:08:19,555 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2401 transitions. Word has length 55 [2019-10-13 22:08:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:19,556 INFO L462 AbstractCegarLoop]: Abstraction has 1793 states and 2401 transitions. [2019-10-13 22:08:19,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2401 transitions. [2019-10-13 22:08:19,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 22:08:19,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:19,563 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 22:08:19,563 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:19,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:19,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1569605503, now seen corresponding path program 1 times [2019-10-13 22:08:19,564 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:19,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44766624] [2019-10-13 22:08:19,564 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:19,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:19,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 22:08:19,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44766624] [2019-10-13 22:08:19,728 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:19,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:19,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855949677] [2019-10-13 22:08:19,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:19,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:19,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:19,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:19,730 INFO L87 Difference]: Start difference. First operand 1793 states and 2401 transitions. Second operand 3 states. [2019-10-13 22:08:19,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:19,841 INFO L93 Difference]: Finished difference Result 3764 states and 5115 transitions. [2019-10-13 22:08:19,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:19,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-13 22:08:19,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:19,855 INFO L225 Difference]: With dead ends: 3764 [2019-10-13 22:08:19,855 INFO L226 Difference]: Without dead ends: 1990 [2019-10-13 22:08:19,865 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 22:08:19,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2019-10-13 22:08:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1986. [2019-10-13 22:08:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1986 states. [2019-10-13 22:08:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2711 transitions. [2019-10-13 22:08:19,975 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2711 transitions. Word has length 88 [2019-10-13 22:08:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:19,978 INFO L462 AbstractCegarLoop]: Abstraction has 1986 states and 2711 transitions. [2019-10-13 22:08:19,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2711 transitions. [2019-10-13 22:08:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 22:08:19,983 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:19,984 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 22:08:19,984 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:19,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:19,984 INFO L82 PathProgramCache]: Analyzing trace with hash 181883480, now seen corresponding path program 1 times [2019-10-13 22:08:19,985 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:19,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318499575] [2019-10-13 22:08:19,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:19,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:19,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 22:08:20,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318499575] [2019-10-13 22:08:20,298 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:20,298 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:08:20,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242096091] [2019-10-13 22:08:20,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:08:20,301 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:20,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:08:20,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:08:20,302 INFO L87 Difference]: Start difference. First operand 1986 states and 2711 transitions. Second operand 5 states. [2019-10-13 22:08:21,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:21,133 INFO L93 Difference]: Finished difference Result 4002 states and 5462 transitions. [2019-10-13 22:08:21,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:08:21,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2019-10-13 22:08:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:21,164 INFO L225 Difference]: With dead ends: 4002 [2019-10-13 22:08:21,164 INFO L226 Difference]: Without dead ends: 2022 [2019-10-13 22:08:21,177 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 22:08:21,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2019-10-13 22:08:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1995. [2019-10-13 22:08:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2019-10-13 22:08:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2717 transitions. [2019-10-13 22:08:21,293 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2717 transitions. Word has length 89 [2019-10-13 22:08:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:21,294 INFO L462 AbstractCegarLoop]: Abstraction has 1995 states and 2717 transitions. [2019-10-13 22:08:21,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:08:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2717 transitions. [2019-10-13 22:08:21,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 22:08:21,299 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:21,299 INFO L380 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:08:21,299 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:21,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:21,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2067221444, now seen corresponding path program 1 times [2019-10-13 22:08:21,300 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:21,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872599801] [2019-10-13 22:08:21,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:21,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:21,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 22:08:22,106 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872599801] [2019-10-13 22:08:22,107 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:22,107 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 22:08:22,107 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256593946] [2019-10-13 22:08:22,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 22:08:22,108 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:22,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 22:08:22,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 22:08:22,109 INFO L87 Difference]: Start difference. First operand 1995 states and 2717 transitions. Second operand 9 states. [2019-10-13 22:08:28,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:28,185 INFO L93 Difference]: Finished difference Result 3394 states and 4634 transitions. [2019-10-13 22:08:28,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 22:08:28,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2019-10-13 22:08:28,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:28,205 INFO L225 Difference]: With dead ends: 3394 [2019-10-13 22:08:28,206 INFO L226 Difference]: Without dead ends: 1999 [2019-10-13 22:08:28,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-13 22:08:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2019-10-13 22:08:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1995. [2019-10-13 22:08:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2019-10-13 22:08:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2715 transitions. [2019-10-13 22:08:28,311 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2715 transitions. Word has length 121 [2019-10-13 22:08:28,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:28,314 INFO L462 AbstractCegarLoop]: Abstraction has 1995 states and 2715 transitions. [2019-10-13 22:08:28,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 22:08:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2715 transitions. [2019-10-13 22:08:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 22:08:28,324 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:28,324 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 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] [2019-10-13 22:08:28,324 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:28,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:28,325 INFO L82 PathProgramCache]: Analyzing trace with hash 202455682, now seen corresponding path program 1 times [2019-10-13 22:08:28,325 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:28,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062840983] [2019-10-13 22:08:28,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:28,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:28,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 22:08:28,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062840983] [2019-10-13 22:08:28,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:28,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 22:08:28,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619354397] [2019-10-13 22:08:28,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:08:28,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:28,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:08:28,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:08:28,562 INFO L87 Difference]: Start difference. First operand 1995 states and 2715 transitions. Second operand 6 states. [2019-10-13 22:08:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:29,108 INFO L93 Difference]: Finished difference Result 4029 states and 5485 transitions. [2019-10-13 22:08:29,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 22:08:29,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2019-10-13 22:08:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:29,124 INFO L225 Difference]: With dead ends: 4029 [2019-10-13 22:08:29,124 INFO L226 Difference]: Without dead ends: 2042 [2019-10-13 22:08:29,133 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 22:08:29,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2019-10-13 22:08:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2001. [2019-10-13 22:08:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2001 states. [2019-10-13 22:08:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2724 transitions. [2019-10-13 22:08:29,214 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2724 transitions. Word has length 116 [2019-10-13 22:08:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:29,215 INFO L462 AbstractCegarLoop]: Abstraction has 2001 states and 2724 transitions. [2019-10-13 22:08:29,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:08:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2724 transitions. [2019-10-13 22:08:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 22:08:29,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:29,220 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 22:08:29,220 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:29,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:29,221 INFO L82 PathProgramCache]: Analyzing trace with hash -2088924115, now seen corresponding path program 1 times [2019-10-13 22:08:29,221 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:29,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677402123] [2019-10-13 22:08:29,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:29,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:29,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 22:08:29,429 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677402123] [2019-10-13 22:08:29,429 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:29,430 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 22:08:29,430 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490297745] [2019-10-13 22:08:29,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:08:29,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:29,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:08:29,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:08:29,433 INFO L87 Difference]: Start difference. First operand 2001 states and 2724 transitions. Second operand 6 states. [2019-10-13 22:08:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:30,081 INFO L93 Difference]: Finished difference Result 3931 states and 5333 transitions. [2019-10-13 22:08:30,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 22:08:30,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-10-13 22:08:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:30,096 INFO L225 Difference]: With dead ends: 3931 [2019-10-13 22:08:30,096 INFO L226 Difference]: Without dead ends: 1941 [2019-10-13 22:08:30,105 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 22:08:30,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2019-10-13 22:08:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1914. [2019-10-13 22:08:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2019-10-13 22:08:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2584 transitions. [2019-10-13 22:08:30,254 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2584 transitions. Word has length 130 [2019-10-13 22:08:30,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:30,255 INFO L462 AbstractCegarLoop]: Abstraction has 1914 states and 2584 transitions. [2019-10-13 22:08:30,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:08:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2584 transitions. [2019-10-13 22:08:30,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 22:08:30,258 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:30,258 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 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] [2019-10-13 22:08:30,258 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:30,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:30,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1105399362, now seen corresponding path program 1 times [2019-10-13 22:08:30,259 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:30,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068953827] [2019-10-13 22:08:30,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:30,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:30,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:30,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 22:08:30,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068953827] [2019-10-13 22:08:30,441 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258219650] [2019-10-13 22:08:30,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:08:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:31,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 22:08:31,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:08:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 22:08:31,180 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:08:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 22:08:31,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [386487315] [2019-10-13 22:08:31,390 INFO L162 IcfgInterpreter]: Started Sifa with 103 locations of interest [2019-10-13 22:08:31,390 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:08:31,397 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:08:31,406 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:08:31,407 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs