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-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:09:09,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:09:09,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:09:09,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:09:09,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:09:09,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:09:09,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:09:09,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:09:09,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:09:09,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:09:09,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:09:09,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:09:09,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:09:09,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:09:09,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:09:09,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:09:09,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:09:09,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:09:09,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:09:09,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:09:09,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:09:09,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:09:09,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:09:09,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:09:09,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:09:09,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:09:09,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:09:09,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:09:09,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:09:09,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:09:09,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:09:09,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:09:09,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:09:09,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:09:09,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:09:09,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:09:09,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:09:09,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:09:09,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:09:09,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:09:09,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:09:09,089 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 [2019-10-07 13:09:09,102 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:09:09,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:09:09,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:09:09,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:09:09,104 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:09:09,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:09:09,104 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:09:09,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:09:09,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:09:09,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:09:09,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:09:09,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:09:09,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:09:09,106 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:09:09,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:09:09,106 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:09:09,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:09:09,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:09:09,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:09:09,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:09:09,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:09:09,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:09:09,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:09:09,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:09:09,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:09:09,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:09:09,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:09:09,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:09:09,109 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 [2019-10-07 13:09:09,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:09:09,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:09:09,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:09:09,409 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:09:09,409 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:09:09,410 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-07 13:09:09,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15d20af6/01ddedf9766948fd9b1b8cec9bae9203/FLAG91f9bfc6b [2019-10-07 13:09:10,167 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:09:10,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-07 13:09:10,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15d20af6/01ddedf9766948fd9b1b8cec9bae9203/FLAG91f9bfc6b [2019-10-07 13:09:10,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15d20af6/01ddedf9766948fd9b1b8cec9bae9203 [2019-10-07 13:09:10,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:09:10,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:09:10,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:09:10,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:09:10,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:09:10,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:09:10" (1/1) ... [2019-10-07 13:09:10,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f078a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:10, skipping insertion in model container [2019-10-07 13:09:10,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:09:10" (1/1) ... [2019-10-07 13:09:10,354 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:09:10,453 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:09:11,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:09:11,626 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:09:11,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:09:11,913 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:09:11,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:11 WrapperNode [2019-10-07 13:09:11,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:09:11,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:09:11,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:09:11,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:09:11,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:11" (1/1) ... [2019-10-07 13:09:11,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:11" (1/1) ... [2019-10-07 13:09:11,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:11" (1/1) ... [2019-10-07 13:09:11,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:11" (1/1) ... [2019-10-07 13:09:12,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:11" (1/1) ... [2019-10-07 13:09:12,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:11" (1/1) ... [2019-10-07 13:09:12,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:11" (1/1) ... [2019-10-07 13:09:12,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:09:12,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:09:12,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:09:12,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:09:12,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:11" (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 [2019-10-07 13:09:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:09:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:09:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-10-07 13:09:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-07 13:09:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-10-07 13:09:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-10-07 13:09:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2019-10-07 13:09:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-07 13:09:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-07 13:09:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2019-10-07 13:09:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-07 13:09:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-07 13:09:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-07 13:09:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-07 13:09:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-07 13:09:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-07 13:09:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-07 13:09:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-07 13:09:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-07 13:09:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-07 13:09:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-07 13:09:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-07 13:09:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2019-10-07 13:09:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2019-10-07 13:09:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2019-10-07 13:09:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2019-10-07 13:09:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2019-10-07 13:09:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2019-10-07 13:09:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2019-10-07 13:09:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_irq [2019-10-07 13:09:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_open [2019-10-07 13:09:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_close [2019-10-07 13:09:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_probe [2019-10-07 13:09:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_disconnect [2019-10-07 13:09:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_init [2019-10-07 13:09:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_exit [2019-10-07 13:09:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-10-07 13:09:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:09:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-07 13:09:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-10-07 13:09:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2019-10-07 13:09:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2019-10-07 13:09:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_5 [2019-10-07 13:09:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_6 [2019-10-07 13:09:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_7 [2019-10-07 13:09:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_8 [2019-10-07 13:09:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_10 [2019-10-07 13:09:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-10-07 13:09:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-07 13:09:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2019-10-07 13:09:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2019-10-07 13:09:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2019-10-07 13:09:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2019-10-07 13:09:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2019-10-07 13:09:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2019-10-07 13:09:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2019-10-07 13:09:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-10-07 13:09:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2019-10-07 13:09:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2019-10-07 13:09:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2019-10-07 13:09:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2019-10-07 13:09:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2019-10-07 13:09:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2019-10-07 13:09:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2019-10-07 13:09:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-07 13:09:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-07 13:09:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-07 13:09:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2019-10-07 13:09:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2019-10-07 13:09:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2019-10-07 13:09:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2019-10-07 13:09:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2019-10-07 13:09:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-07 13:09:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-07 13:09:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2019-10-07 13:09:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2019-10-07 13:09:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-10-07 13:09:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-07 13:09:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-10-07 13:09:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-07 13:09:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-07 13:09:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-07 13:09:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-07 13:09:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-07 13:09:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-07 13:09:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-07 13:09:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:09:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-07 13:09:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-07 13:09:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:09:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-10-07 13:09:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-10-07 13:09:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-07 13:09:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-07 13:09:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-07 13:09:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-07 13:09:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-07 13:09:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2019-10-07 13:09:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2019-10-07 13:09:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-07 13:09:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-07 13:09:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_8 [2019-10-07 13:09:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_7 [2019-10-07 13:09:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-07 13:09:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2019-10-07 13:09:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:09:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:09:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-07 13:09:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-10-07 13:09:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-07 13:09:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-07 13:09:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-10-07 13:09:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_6 [2019-10-07 13:09:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_5 [2019-10-07 13:09:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_10 [2019-10-07 13:09:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2019-10-07 13:09:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2019-10-07 13:09:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-07 13:09:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-10-07 13:09:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-10-07 13:09:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-07 13:09:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2019-10-07 13:09:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2019-10-07 13:09:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2019-10-07 13:09:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2019-10-07 13:09:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-10-07 13:09:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2019-10-07 13:09:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2019-10-07 13:09:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2019-10-07 13:09:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-07 13:09:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-07 13:09:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-07 13:09:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-07 13:09:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-07 13:09:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:09:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 13:09:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:09:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-07 13:09:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-07 13:09:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:09:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:09:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-07 13:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-07 13:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-07 13:09:12,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-07 13:09:12,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-07 13:09:12,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-07 13:09:12,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-07 13:09:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-07 13:09:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-07 13:09:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-10-07 13:09:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2019-10-07 13:09:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2019-10-07 13:09:12,245 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2019-10-07 13:09:12,245 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2019-10-07 13:09:12,245 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2019-10-07 13:09:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2019-10-07 13:09:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2019-10-07 13:09:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2019-10-07 13:09:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2019-10-07 13:09:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2019-10-07 13:09:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2019-10-07 13:09:12,247 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2019-10-07 13:09:12,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:09:12,247 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_irq [2019-10-07 13:09:12,247 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_open [2019-10-07 13:09:12,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:09:12,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_close [2019-10-07 13:09:12,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_probe [2019-10-07 13:09:12,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_disconnect [2019-10-07 13:09:12,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_init [2019-10-07 13:09:12,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_exit [2019-10-07 13:09:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-07 13:09:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-07 13:09:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:09:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-07 13:09:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2019-10-07 13:09:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2019-10-07 13:09:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-10-07 13:09:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2019-10-07 13:09:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2019-10-07 13:09:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2019-10-07 13:09:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2019-10-07 13:09:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2019-10-07 13:09:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2019-10-07 13:09:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-07 13:09:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:09:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:09:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:09:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 13:09:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-07 13:09:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:09:13,091 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-07 13:09:14,717 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:09:14,717 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-07 13:09:14,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:09:14 BoogieIcfgContainer [2019-10-07 13:09:14,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:09:14,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:09:14,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:09:14,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:09:14,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:09:10" (1/3) ... [2019-10-07 13:09:14,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6895f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:09:14, skipping insertion in model container [2019-10-07 13:09:14,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:11" (2/3) ... [2019-10-07 13:09:14,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6895f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:09:14, skipping insertion in model container [2019-10-07 13:09:14,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:09:14" (3/3) ... [2019-10-07 13:09:14,728 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-07 13:09:14,739 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:09:14,749 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:09:14,762 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:09:14,792 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:09:14,792 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:09:14,792 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:09:14,792 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:09:14,792 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:09:14,793 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:09:14,793 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:09:14,793 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:09:14,822 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states. [2019-10-07 13:09:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 13:09:14,832 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:14,833 INFO L385 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] [2019-10-07 13:09:14,835 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:14,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:14,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1188300801, now seen corresponding path program 1 times [2019-10-07 13:09:14,852 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:14,852 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:14,852 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:14,852 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:09:15,379 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:15,380 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:15,380 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:15,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:15,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:15,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:15,402 INFO L87 Difference]: Start difference. First operand 414 states. Second operand 3 states. [2019-10-07 13:09:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:15,550 INFO L93 Difference]: Finished difference Result 856 states and 1017 transitions. [2019-10-07 13:09:15,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:15,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-10-07 13:09:15,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:15,631 INFO L225 Difference]: With dead ends: 856 [2019-10-07 13:09:15,631 INFO L226 Difference]: Without dead ends: 540 [2019-10-07 13:09:15,643 INFO L606 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 [2019-10-07 13:09:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2019-10-07 13:09:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2019-10-07 13:09:15,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-10-07 13:09:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 627 transitions. [2019-10-07 13:09:15,770 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 627 transitions. Word has length 38 [2019-10-07 13:09:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:15,770 INFO L462 AbstractCegarLoop]: Abstraction has 540 states and 627 transitions. [2019-10-07 13:09:15,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 627 transitions. [2019-10-07 13:09:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-07 13:09:15,774 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:15,775 INFO L385 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] [2019-10-07 13:09:15,775 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:15,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:15,775 INFO L82 PathProgramCache]: Analyzing trace with hash 578807213, now seen corresponding path program 1 times [2019-10-07 13:09:15,776 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:15,776 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:15,776 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:15,776 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:09:16,011 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:16,011 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:16,012 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:16,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:16,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:16,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:16,014 INFO L87 Difference]: Start difference. First operand 540 states and 627 transitions. Second operand 3 states. [2019-10-07 13:09:16,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:16,117 INFO L93 Difference]: Finished difference Result 927 states and 1074 transitions. [2019-10-07 13:09:16,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:16,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-10-07 13:09:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:16,131 INFO L225 Difference]: With dead ends: 927 [2019-10-07 13:09:16,131 INFO L226 Difference]: Without dead ends: 924 [2019-10-07 13:09:16,133 INFO L606 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 [2019-10-07 13:09:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2019-10-07 13:09:16,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 904. [2019-10-07 13:09:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2019-10-07 13:09:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1049 transitions. [2019-10-07 13:09:16,204 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1049 transitions. Word has length 57 [2019-10-07 13:09:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:16,205 INFO L462 AbstractCegarLoop]: Abstraction has 904 states and 1049 transitions. [2019-10-07 13:09:16,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1049 transitions. [2019-10-07 13:09:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-07 13:09:16,208 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:16,208 INFO L385 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] [2019-10-07 13:09:16,208 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:16,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash 763009325, now seen corresponding path program 1 times [2019-10-07 13:09:16,209 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:16,209 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:16,209 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:16,209 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:09:16,377 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:16,377 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:16,378 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:16,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:16,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:16,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:16,379 INFO L87 Difference]: Start difference. First operand 904 states and 1049 transitions. Second operand 3 states. [2019-10-07 13:09:16,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:16,419 INFO L93 Difference]: Finished difference Result 906 states and 1050 transitions. [2019-10-07 13:09:16,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:16,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-10-07 13:09:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:16,426 INFO L225 Difference]: With dead ends: 906 [2019-10-07 13:09:16,426 INFO L226 Difference]: Without dead ends: 903 [2019-10-07 13:09:16,426 INFO L606 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 [2019-10-07 13:09:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2019-10-07 13:09:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 903. [2019-10-07 13:09:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2019-10-07 13:09:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1047 transitions. [2019-10-07 13:09:16,497 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1047 transitions. Word has length 58 [2019-10-07 13:09:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:16,498 INFO L462 AbstractCegarLoop]: Abstraction has 903 states and 1047 transitions. [2019-10-07 13:09:16,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1047 transitions. [2019-10-07 13:09:16,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-07 13:09:16,501 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:16,501 INFO L385 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] [2019-10-07 13:09:16,501 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:16,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:16,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2116654928, now seen corresponding path program 1 times [2019-10-07 13:09:16,502 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:16,502 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:16,502 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:16,502 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:09:16,658 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:16,659 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:16,659 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:16,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:16,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:16,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:16,661 INFO L87 Difference]: Start difference. First operand 903 states and 1047 transitions. Second operand 3 states. [2019-10-07 13:09:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:16,704 INFO L93 Difference]: Finished difference Result 905 states and 1048 transitions. [2019-10-07 13:09:16,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:16,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-10-07 13:09:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:16,711 INFO L225 Difference]: With dead ends: 905 [2019-10-07 13:09:16,712 INFO L226 Difference]: Without dead ends: 902 [2019-10-07 13:09:16,712 INFO L606 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 [2019-10-07 13:09:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2019-10-07 13:09:16,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 902. [2019-10-07 13:09:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2019-10-07 13:09:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1045 transitions. [2019-10-07 13:09:16,774 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1045 transitions. Word has length 59 [2019-10-07 13:09:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:16,774 INFO L462 AbstractCegarLoop]: Abstraction has 902 states and 1045 transitions. [2019-10-07 13:09:16,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1045 transitions. [2019-10-07 13:09:16,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-07 13:09:16,779 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:16,779 INFO L385 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] [2019-10-07 13:09:16,780 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:16,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:16,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1191928688, now seen corresponding path program 1 times [2019-10-07 13:09:16,781 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:16,781 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:16,781 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:16,782 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:16,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:09:16,950 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:16,950 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:16,951 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:16,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:16,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:16,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:16,954 INFO L87 Difference]: Start difference. First operand 902 states and 1045 transitions. Second operand 3 states. [2019-10-07 13:09:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:17,003 INFO L93 Difference]: Finished difference Result 904 states and 1046 transitions. [2019-10-07 13:09:17,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:17,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-10-07 13:09:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:17,013 INFO L225 Difference]: With dead ends: 904 [2019-10-07 13:09:17,013 INFO L226 Difference]: Without dead ends: 901 [2019-10-07 13:09:17,014 INFO L606 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 [2019-10-07 13:09:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2019-10-07 13:09:17,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2019-10-07 13:09:17,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2019-10-07 13:09:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1043 transitions. [2019-10-07 13:09:17,077 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1043 transitions. Word has length 60 [2019-10-07 13:09:17,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:17,081 INFO L462 AbstractCegarLoop]: Abstraction has 901 states and 1043 transitions. [2019-10-07 13:09:17,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1043 transitions. [2019-10-07 13:09:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-07 13:09:17,083 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:17,083 INFO L385 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] [2019-10-07 13:09:17,083 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:17,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:17,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1704785843, now seen corresponding path program 1 times [2019-10-07 13:09:17,084 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:17,084 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:17,084 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:17,084 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:17,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:09:17,251 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:17,251 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:17,251 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:17,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:17,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:17,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:17,252 INFO L87 Difference]: Start difference. First operand 901 states and 1043 transitions. Second operand 3 states. [2019-10-07 13:09:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:17,302 INFO L93 Difference]: Finished difference Result 903 states and 1044 transitions. [2019-10-07 13:09:17,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:17,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2019-10-07 13:09:17,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:17,309 INFO L225 Difference]: With dead ends: 903 [2019-10-07 13:09:17,309 INFO L226 Difference]: Without dead ends: 883 [2019-10-07 13:09:17,310 INFO L606 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 [2019-10-07 13:09:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2019-10-07 13:09:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2019-10-07 13:09:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2019-10-07 13:09:17,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1022 transitions. [2019-10-07 13:09:17,392 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1022 transitions. Word has length 61 [2019-10-07 13:09:17,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:17,393 INFO L462 AbstractCegarLoop]: Abstraction has 883 states and 1022 transitions. [2019-10-07 13:09:17,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:17,393 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1022 transitions. [2019-10-07 13:09:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-07 13:09:17,397 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:17,398 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:09:17,398 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:17,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:17,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2075513611, now seen corresponding path program 1 times [2019-10-07 13:09:17,399 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:17,399 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:17,399 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:17,399 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 13:09:17,609 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:17,610 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:17,610 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:17,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:17,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:17,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:17,612 INFO L87 Difference]: Start difference. First operand 883 states and 1022 transitions. Second operand 3 states. [2019-10-07 13:09:17,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:17,700 INFO L93 Difference]: Finished difference Result 1424 states and 1662 transitions. [2019-10-07 13:09:17,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:17,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2019-10-07 13:09:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:17,704 INFO L225 Difference]: With dead ends: 1424 [2019-10-07 13:09:17,704 INFO L226 Difference]: Without dead ends: 558 [2019-10-07 13:09:17,706 INFO L606 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 [2019-10-07 13:09:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2019-10-07 13:09:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 526. [2019-10-07 13:09:17,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-07 13:09:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 615 transitions. [2019-10-07 13:09:17,745 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 615 transitions. Word has length 186 [2019-10-07 13:09:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:17,745 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 615 transitions. [2019-10-07 13:09:17,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 615 transitions. [2019-10-07 13:09:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-07 13:09:17,749 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:17,749 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:09:17,749 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash -854921549, now seen corresponding path program 1 times [2019-10-07 13:09:17,750 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:17,750 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:17,750 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:17,750 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 13:09:17,914 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:17,915 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:17,915 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 13:09:17,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:09:17,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:09:17,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:09:17,917 INFO L87 Difference]: Start difference. First operand 526 states and 615 transitions. Second operand 6 states. [2019-10-07 13:09:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:17,991 INFO L93 Difference]: Finished difference Result 1034 states and 1213 transitions. [2019-10-07 13:09:17,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:09:17,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2019-10-07 13:09:17,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:17,995 INFO L225 Difference]: With dead ends: 1034 [2019-10-07 13:09:17,995 INFO L226 Difference]: Without dead ends: 538 [2019-10-07 13:09:17,997 INFO L606 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 [2019-10-07 13:09:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-10-07 13:09:18,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2019-10-07 13:09:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2019-10-07 13:09:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 625 transitions. [2019-10-07 13:09:18,080 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 625 transitions. Word has length 203 [2019-10-07 13:09:18,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:18,080 INFO L462 AbstractCegarLoop]: Abstraction has 536 states and 625 transitions. [2019-10-07 13:09:18,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:09:18,080 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 625 transitions. [2019-10-07 13:09:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-07 13:09:18,084 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:18,084 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:09:18,084 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:18,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1660401743, now seen corresponding path program 1 times [2019-10-07 13:09:18,085 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:18,085 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:18,085 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:18,086 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 13:09:18,544 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:18,544 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:18,544 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 13:09:18,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 13:09:18,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 13:09:18,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:09:18,546 INFO L87 Difference]: Start difference. First operand 536 states and 625 transitions. Second operand 8 states. [2019-10-07 13:09:19,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:19,459 INFO L93 Difference]: Finished difference Result 769 states and 898 transitions. [2019-10-07 13:09:19,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 13:09:19,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2019-10-07 13:09:19,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:19,464 INFO L225 Difference]: With dead ends: 769 [2019-10-07 13:09:19,464 INFO L226 Difference]: Without dead ends: 753 [2019-10-07 13:09:19,465 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:09:19,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-10-07 13:09:19,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 748. [2019-10-07 13:09:19,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2019-10-07 13:09:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 875 transitions. [2019-10-07 13:09:19,509 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 875 transitions. Word has length 207 [2019-10-07 13:09:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:19,510 INFO L462 AbstractCegarLoop]: Abstraction has 748 states and 875 transitions. [2019-10-07 13:09:19,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 13:09:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 875 transitions. [2019-10-07 13:09:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-07 13:09:19,515 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:19,515 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:09:19,516 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:19,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:19,516 INFO L82 PathProgramCache]: Analyzing trace with hash 94456589, now seen corresponding path program 1 times [2019-10-07 13:09:19,516 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:19,516 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:19,517 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:19,517 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 13:09:19,740 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:19,740 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:09:19,740 INFO L95 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 [2019-10-07 13:09:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:20,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 2105 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-07 13:09:20,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:09:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:09:20,546 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:09:20,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:09:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 13:09:21,107 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:09:21,107 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6] total 12 [2019-10-07 13:09:21,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 13:09:21,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 13:09:21,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:09:21,110 INFO L87 Difference]: Start difference. First operand 748 states and 875 transitions. Second operand 8 states. [2019-10-07 13:09:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:22,409 INFO L93 Difference]: Finished difference Result 1979 states and 2320 transitions. [2019-10-07 13:09:22,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 13:09:22,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 242 [2019-10-07 13:09:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:22,422 INFO L225 Difference]: With dead ends: 1979 [2019-10-07 13:09:22,422 INFO L226 Difference]: Without dead ends: 1963 [2019-10-07 13:09:22,423 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 478 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-10-07 13:09:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2019-10-07 13:09:22,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1944. [2019-10-07 13:09:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2019-10-07 13:09:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2283 transitions. [2019-10-07 13:09:22,552 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2283 transitions. Word has length 242 [2019-10-07 13:09:22,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:22,555 INFO L462 AbstractCegarLoop]: Abstraction has 1944 states and 2283 transitions. [2019-10-07 13:09:22,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 13:09:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2283 transitions. [2019-10-07 13:09:22,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-07 13:09:22,561 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:22,562 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:09:22,770 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:09:22,771 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash 96989818, now seen corresponding path program 1 times [2019-10-07 13:09:22,772 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:22,773 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:22,773 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:22,773 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:23,619 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1186) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:574) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:55) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-07 13:09:23,625 INFO L168 Benchmark]: Toolchain (without parser) took 13286.45 ms. Allocated memory was 138.9 MB in the beginning and 525.3 MB in the end (delta: 386.4 MB). Free memory was 95.3 MB in the beginning and 350.3 MB in the end (delta: -255.0 MB). Peak memory consumption was 131.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:09:23,625 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 13:09:23,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1576.49 ms. Allocated memory was 138.9 MB in the beginning and 206.6 MB in the end (delta: 67.6 MB). Free memory was 94.9 MB in the beginning and 118.5 MB in the end (delta: -23.7 MB). Peak memory consumption was 49.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:09:23,627 INFO L168 Benchmark]: Boogie Preprocessor took 182.58 ms. Allocated memory is still 206.6 MB. Free memory was 118.5 MB in the beginning and 110.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:09:23,627 INFO L168 Benchmark]: RCFGBuilder took 2619.13 ms. Allocated memory was 206.6 MB in the beginning and 260.0 MB in the end (delta: 53.5 MB). Free memory was 110.2 MB in the beginning and 127.1 MB in the end (delta: -16.8 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:09:23,628 INFO L168 Benchmark]: TraceAbstraction took 8901.64 ms. Allocated memory was 260.0 MB in the beginning and 525.3 MB in the end (delta: 265.3 MB). Free memory was 127.1 MB in the beginning and 350.3 MB in the end (delta: -223.2 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2019-10-07 13:09:23,631 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1576.49 ms. Allocated memory was 138.9 MB in the beginning and 206.6 MB in the end (delta: 67.6 MB). Free memory was 94.9 MB in the beginning and 118.5 MB in the end (delta: -23.7 MB). Peak memory consumption was 49.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 182.58 ms. Allocated memory is still 206.6 MB. Free memory was 118.5 MB in the beginning and 110.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2619.13 ms. Allocated memory was 206.6 MB in the beginning and 260.0 MB in the end (delta: 53.5 MB). Free memory was 110.2 MB in the beginning and 127.1 MB in the end (delta: -16.8 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8901.64 ms. Allocated memory was 260.0 MB in the beginning and 525.3 MB in the end (delta: 265.3 MB). Free memory was 127.1 MB in the beginning and 350.3 MB in the end (delta: -223.2 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...