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-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:54:41,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:54:41,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:54:41,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:54:41,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:54:41,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:54:41,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:54:41,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:54:41,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:54:41,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:54:41,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:54:41,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:54:41,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:54:41,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:54:41,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:54:41,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:54:41,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:54:41,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:54:41,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:54:41,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:54:41,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:54:41,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:54:41,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:54:41,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:54:41,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:54:41,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:54:41,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:54:41,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:54:41,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:54:41,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:54:41,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:54:41,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:54:41,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:54:41,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:54:41,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:54:41,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:54:41,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:54:41,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:54:41,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:54:41,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:54:41,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:54:41,227 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 22:54:41,242 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:54:41,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:54:41,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:54:41,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:54:41,244 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:54:41,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:54:41,244 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:54:41,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:54:41,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:54:41,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:54:41,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:54:41,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:54:41,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:54:41,246 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:54:41,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:54:41,246 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:54:41,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:54:41,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:54:41,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:54:41,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:54:41,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:54:41,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:54:41,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:54:41,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:54:41,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:54:41,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:54:41,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:54:41,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:54:41,250 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 22:54:41,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:54:41,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:54:41,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:54:41,557 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:54:41,557 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:54:41,558 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 22:54:41,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf38eef9/b8a3ab9c9903462b99b46acd6f112b72/FLAGa2f1775bf [2019-10-13 22:54:42,415 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:54:42,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 22:54:42,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf38eef9/b8a3ab9c9903462b99b46acd6f112b72/FLAGa2f1775bf [2019-10-13 22:54:42,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf38eef9/b8a3ab9c9903462b99b46acd6f112b72 [2019-10-13 22:54:42,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:54:42,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:54:42,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:54:42,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:54:42,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:54:42,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:54:42" (1/1) ... [2019-10-13 22:54:42,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76223231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:42, skipping insertion in model container [2019-10-13 22:54:42,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:54:42" (1/1) ... [2019-10-13 22:54:42,990 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:54:43,085 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:54:44,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:54:44,439 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:54:44,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:54:44,992 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:54:44,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:44 WrapperNode [2019-10-13 22:54:44,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:54:44,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:54:44,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:54:44,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:54:45,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:44" (1/1) ... [2019-10-13 22:54:45,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:44" (1/1) ... [2019-10-13 22:54:45,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:44" (1/1) ... [2019-10-13 22:54:45,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:44" (1/1) ... [2019-10-13 22:54:45,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:44" (1/1) ... [2019-10-13 22:54:45,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:44" (1/1) ... [2019-10-13 22:54:45,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:44" (1/1) ... [2019-10-13 22:54:45,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:54:45,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:54:45,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:54:45,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:54:45,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:44" (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 22:54:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:54:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:54:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_4 [2019-10-13 22:54:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:54:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:54:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 22:54:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:54:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 22:54:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-13 22:54:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-13 22:54:45,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 22:54:45,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 22:54:45,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 22:54:45,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 22:54:45,411 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-13 22:54:45,411 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-10-13 22:54:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-10-13 22:54:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-10-13 22:54:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_out [2019-10-13 22:54:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-13 22:54:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-10-13 22:54:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-13 22:54:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2019-10-13 22:54:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2019-10-13 22:54:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2019-10-13 22:54:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_startup [2019-10-13 22:54:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_release [2019-10-13 22:54:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init_termios [2019-10-13 22:54:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_open [2019-10-13 22:54:45,416 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_close [2019-10-13 22:54:45,416 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_read_int_callback [2019-10-13 22:54:45,416 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_callback [2019-10-13 22:54:45,416 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write [2019-10-13 22:54:45,416 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_room [2019-10-13 22:54:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmget [2019-10-13 22:54:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmset [2019-10-13 22:54:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_set_termios [2019-10-13 22:54:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_ioctl [2019-10-13 22:54:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init [2019-10-13 22:54:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_exit [2019-10-13 22:54:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-10-13 22:54:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-13 22:54:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:54:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_flags_3 [2019-10-13 22:54:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string [2019-10-13 22:54:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2019-10-13 22:54:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_6 [2019-10-13 22:54:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_port_tty_get_7 [2019-10-13 22:54:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_flip_buffer_push_8 [2019-10-13 22:54:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_get_baud_rate_9 [2019-10-13 22:54:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_encode_baud_rate_10 [2019-10-13 22:54:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-10-13 22:54:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:54:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:54:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2019-10-13 22:54:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_got_tty [2019-10-13 22:54:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_tty [2019-10-13 22:54:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-13 22:54:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2019-10-13 22:54:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-13 22:54:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:54:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2019-10-13 22:54:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2019-10-13 22:54:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2019-10-13 22:54:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:54:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2019-10-13 22:54:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2019-10-13 22:54:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-10-13 22:54:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2019-10-13 22:54:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_flags [2019-10-13 22:54:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2019-10-13 22:54:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2019-10-13 22:54:45,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-13 22:54:45,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2019-10-13 22:54:45,425 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 22:54:45,425 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-13 22:54:45,425 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-13 22:54:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2019-10-13 22:54:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 22:54:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-10-13 22:54:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-10-13 22:54:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-10-13 22:54:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-10-13 22:54:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-10-13 22:54:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:54:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:54:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 22:54:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 22:54:45,429 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 22:54:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:54:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:54:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 22:54:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2019-10-13 22:54:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2019-10-13 22:54:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2019-10-13 22:54:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_flip_buffer_push_8 [2019-10-13 22:54:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-10-13 22:54:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_get_baud_rate_9 [2019-10-13 22:54:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2019-10-13 22:54:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_encode_baud_rate_10 [2019-10-13 22:54:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2019-10-13 22:54:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_port_tty_get_7 [2019-10-13 22:54:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_flags [2019-10-13 22:54:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_flags_3 [2019-10-13 22:54:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2019-10-13 22:54:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2019-10-13 22:54:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_4 [2019-10-13 22:54:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string [2019-10-13 22:54:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_got_tty [2019-10-13 22:54:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_tty [2019-10-13 22:54:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:54:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:54:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:54:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:54:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 22:54:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:54:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:54:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:54:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:54:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:54:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:54:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:54:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 22:54:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 22:54:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-13 22:54:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-13 22:54:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 22:54:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 22:54:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 22:54:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 22:54:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 22:54:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-10-13 22:54:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-13 22:54:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-13 22:54:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:54:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-10-13 22:54:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-10-13 22:54:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-10-13 22:54:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_out [2019-10-13 22:54:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-13 22:54:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-13 22:54:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2019-10-13 22:54:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 22:54:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_6 [2019-10-13 22:54:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-13 22:54:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:54:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 22:54:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-10-13 22:54:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-10-13 22:54:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:54:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:54:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-13 22:54:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-13 22:54:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-10-13 22:54:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-13 22:54:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2019-10-13 22:54:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2019-10-13 22:54:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-13 22:54:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2019-10-13 22:54:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2019-10-13 22:54:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-10-13 22:54:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-10-13 22:54:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-10-13 22:54:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-10-13 22:54:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2019-10-13 22:54:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_startup [2019-10-13 22:54:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_release [2019-10-13 22:54:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_open [2019-10-13 22:54:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_close [2019-10-13 22:54:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write [2019-10-13 22:54:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_room [2019-10-13 22:54:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_ioctl [2019-10-13 22:54:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmget [2019-10-13 22:54:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmset [2019-10-13 22:54:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_read_int_callback [2019-10-13 22:54:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_callback [2019-10-13 22:54:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_set_termios [2019-10-13 22:54:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init_termios [2019-10-13 22:54:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:54:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 22:54:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 22:54:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init [2019-10-13 22:54:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_exit [2019-10-13 22:54:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2019-10-13 22:54:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2019-10-13 22:54:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:54:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:54:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:54:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:54:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:54:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2019-10-13 22:54:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:54:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 22:54:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:54:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:54:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:54:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:54:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:54:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 22:54:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 22:54:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 22:54:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 22:54:46,446 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 22:55:00,494 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:55:00,494 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:55:00,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:00 BoogieIcfgContainer [2019-10-13 22:55:00,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:55:00,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:55:00,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:55:00,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:55:00,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:54:42" (1/3) ... [2019-10-13 22:55:00,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e576c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:00, skipping insertion in model container [2019-10-13 22:55:00,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:44" (2/3) ... [2019-10-13 22:55:00,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e576c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:00, skipping insertion in model container [2019-10-13 22:55:00,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:00" (3/3) ... [2019-10-13 22:55:00,505 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 22:55:00,515 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:55:00,526 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:55:00,537 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:55:00,569 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:55:00,569 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:55:00,569 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:55:00,569 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:55:00,569 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:55:00,569 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:55:00,570 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:55:00,570 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:55:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states. [2019-10-13 22:55:00,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 22:55:00,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:00,627 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:00,629 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:00,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:00,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1248946661, now seen corresponding path program 1 times [2019-10-13 22:55:00,646 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:00,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011220098] [2019-10-13 22:55:00,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:00,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:00,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-13 22:55:01,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011220098] [2019-10-13 22:55:01,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:01,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:01,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066729767] [2019-10-13 22:55:01,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:01,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:01,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:01,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:01,545 INFO L87 Difference]: Start difference. First operand 611 states. Second operand 3 states. [2019-10-13 22:55:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:02,046 INFO L93 Difference]: Finished difference Result 1250 states and 1645 transitions. [2019-10-13 22:55:02,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:02,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-13 22:55:02,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:02,073 INFO L225 Difference]: With dead ends: 1250 [2019-10-13 22:55:02,073 INFO L226 Difference]: Without dead ends: 644 [2019-10-13 22:55:02,084 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 22:55:02,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-13 22:55:02,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2019-10-13 22:55:02,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-10-13 22:55:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 834 transitions. [2019-10-13 22:55:02,240 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 834 transitions. Word has length 121 [2019-10-13 22:55:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:02,241 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 834 transitions. [2019-10-13 22:55:02,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:02,242 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 834 transitions. [2019-10-13 22:55:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 22:55:02,254 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:02,254 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2019-10-13 22:55:02,255 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:02,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:02,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1512316019, now seen corresponding path program 1 times [2019-10-13 22:55:02,255 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:02,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694105829] [2019-10-13 22:55:02,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:02,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:02,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2019-10-13 22:55:02,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694105829] [2019-10-13 22:55:02,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:02,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 22:55:02,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275714558] [2019-10-13 22:55:02,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:55:02,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:02,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:55:02,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:55:02,759 INFO L87 Difference]: Start difference. First operand 644 states and 834 transitions. Second operand 6 states. [2019-10-13 22:55:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:04,916 INFO L93 Difference]: Finished difference Result 1851 states and 2400 transitions. [2019-10-13 22:55:04,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 22:55:04,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2019-10-13 22:55:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:04,927 INFO L225 Difference]: With dead ends: 1851 [2019-10-13 22:55:04,928 INFO L226 Difference]: Without dead ends: 1218 [2019-10-13 22:55:04,932 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-10-13 22:55:04,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2019-10-13 22:55:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1213. [2019-10-13 22:55:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2019-10-13 22:55:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1573 transitions. [2019-10-13 22:55:05,000 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1573 transitions. Word has length 171 [2019-10-13 22:55:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:05,001 INFO L462 AbstractCegarLoop]: Abstraction has 1213 states and 1573 transitions. [2019-10-13 22:55:05,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:55:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1573 transitions. [2019-10-13 22:55:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-13 22:55:05,009 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:05,009 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 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] [2019-10-13 22:55:05,010 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:05,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:05,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1945722989, now seen corresponding path program 1 times [2019-10-13 22:55:05,010 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:05,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952173540] [2019-10-13 22:55:05,011 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:05,011 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:05,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-10-13 22:55:05,337 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952173540] [2019-10-13 22:55:05,337 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:05,337 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:05,337 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991198087] [2019-10-13 22:55:05,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:05,339 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:05,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:05,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:05,340 INFO L87 Difference]: Start difference. First operand 1213 states and 1573 transitions. Second operand 3 states. [2019-10-13 22:55:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:07,867 INFO L93 Difference]: Finished difference Result 2851 states and 3723 transitions. [2019-10-13 22:55:07,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:07,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-10-13 22:55:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:07,879 INFO L225 Difference]: With dead ends: 2851 [2019-10-13 22:55:07,879 INFO L226 Difference]: Without dead ends: 1679 [2019-10-13 22:55:07,884 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 22:55:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2019-10-13 22:55:07,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1642. [2019-10-13 22:55:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2019-10-13 22:55:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2095 transitions. [2019-10-13 22:55:07,951 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2095 transitions. Word has length 192 [2019-10-13 22:55:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:07,952 INFO L462 AbstractCegarLoop]: Abstraction has 1642 states and 2095 transitions. [2019-10-13 22:55:07,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2095 transitions. [2019-10-13 22:55:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 22:55:07,956 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:07,956 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 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] [2019-10-13 22:55:07,956 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:07,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:07,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1749452105, now seen corresponding path program 1 times [2019-10-13 22:55:07,957 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:07,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991780872] [2019-10-13 22:55:07,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:07,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:07,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-10-13 22:55:08,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991780872] [2019-10-13 22:55:08,644 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:08,644 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:08,644 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865225412] [2019-10-13 22:55:08,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:08,645 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:08,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:08,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:08,646 INFO L87 Difference]: Start difference. First operand 1642 states and 2095 transitions. Second operand 3 states. [2019-10-13 22:55:10,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:10,968 INFO L93 Difference]: Finished difference Result 3169 states and 4063 transitions. [2019-10-13 22:55:10,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:10,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-13 22:55:10,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:10,988 INFO L225 Difference]: With dead ends: 3169 [2019-10-13 22:55:10,988 INFO L226 Difference]: Without dead ends: 3166 [2019-10-13 22:55:10,991 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 22:55:10,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2019-10-13 22:55:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 3097. [2019-10-13 22:55:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3097 states. [2019-10-13 22:55:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 3974 transitions. [2019-10-13 22:55:11,125 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 3974 transitions. Word has length 193 [2019-10-13 22:55:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:11,126 INFO L462 AbstractCegarLoop]: Abstraction has 3097 states and 3974 transitions. [2019-10-13 22:55:11,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 3974 transitions. [2019-10-13 22:55:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 22:55:11,132 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:11,132 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:11,133 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:11,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:11,133 INFO L82 PathProgramCache]: Analyzing trace with hash -504692545, now seen corresponding path program 1 times [2019-10-13 22:55:11,133 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:11,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000775306] [2019-10-13 22:55:11,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:11,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:11,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-10-13 22:55:11,476 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000775306] [2019-10-13 22:55:11,476 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:11,477 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:11,477 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466026423] [2019-10-13 22:55:11,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:11,478 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:11,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:11,480 INFO L87 Difference]: Start difference. First operand 3097 states and 3974 transitions. Second operand 3 states. [2019-10-13 22:55:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:14,112 INFO L93 Difference]: Finished difference Result 7014 states and 9079 transitions. [2019-10-13 22:55:14,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:14,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-10-13 22:55:14,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:14,139 INFO L225 Difference]: With dead ends: 7014 [2019-10-13 22:55:14,139 INFO L226 Difference]: Without dead ends: 3958 [2019-10-13 22:55:14,149 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 22:55:14,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2019-10-13 22:55:14,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3955. [2019-10-13 22:55:14,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3955 states. [2019-10-13 22:55:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 5016 transitions. [2019-10-13 22:55:14,421 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 5016 transitions. Word has length 214 [2019-10-13 22:55:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:14,422 INFO L462 AbstractCegarLoop]: Abstraction has 3955 states and 5016 transitions. [2019-10-13 22:55:14,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 5016 transitions. [2019-10-13 22:55:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-13 22:55:14,428 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:14,429 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 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] [2019-10-13 22:55:14,429 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:14,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1450024003, now seen corresponding path program 1 times [2019-10-13 22:55:14,430 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:14,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943585077] [2019-10-13 22:55:14,430 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:14,430 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:14,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-10-13 22:55:14,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943585077] [2019-10-13 22:55:14,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233748795] [2019-10-13 22:55:14,881 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 22:55:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:15,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 3696 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 22:55:15,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:15,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:55:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2019-10-13 22:55:16,213 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:55:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2019-10-13 22:55:16,564 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 22:55:16,565 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 3] imperfect sequences [4] total 7 [2019-10-13 22:55:16,565 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646785633] [2019-10-13 22:55:16,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:55:16,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:16,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:55:16,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-10-13 22:55:16,567 INFO L87 Difference]: Start difference. First operand 3955 states and 5016 transitions. Second operand 6 states.