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_1a-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 13:09:06,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:09:06,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:09:06,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:09:06,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:09:06,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:09:06,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:09:06,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:09:06,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:09:06,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:09:06,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:09:06,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:09:06,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:09:06,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:09:06,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:09:06,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:09:06,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:09:06,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:09:06,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:09:06,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:09:06,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:09:06,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:09:06,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:09:06,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:09:06,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:09:06,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:09:06,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:09:06,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:09:06,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:09:06,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:09:06,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:09:06,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:09:06,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:09:06,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:09:06,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:09:06,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:09:06,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:09:06,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:09:06,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:09:06,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:09:06,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:09:06,216 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 13:09:06,254 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:09:06,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:09:06,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:09:06,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:09:06,259 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:09:06,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:09:06,259 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:09:06,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:09:06,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:09:06,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:09:06,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:09:06,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:09:06,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:09:06,261 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:09:06,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:09:06,261 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:09:06,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:09:06,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:09:06,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:09:06,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:09:06,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:09:06,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:09:06,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:09:06,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:09:06,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:09:06,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:09:06,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:09:06,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:09:06,264 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 13:09:06,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:09:06,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:09:06,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:09:06,571 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:09:06,571 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:09:06,572 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-07 13:09:06,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49fef3bf6/f915371003b04cefa640a7195505ba90/FLAGbd9e1aabb [2019-10-07 13:09:07,365 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:09:07,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-07 13:09:07,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49fef3bf6/f915371003b04cefa640a7195505ba90/FLAGbd9e1aabb [2019-10-07 13:09:07,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49fef3bf6/f915371003b04cefa640a7195505ba90 [2019-10-07 13:09:07,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:09:07,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:09:07,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:09:07,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:09:07,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:09:07,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:09:07" (1/1) ... [2019-10-07 13:09:07,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5510b8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:07, skipping insertion in model container [2019-10-07 13:09:07,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:09:07" (1/1) ... [2019-10-07 13:09:07,520 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:09:07,615 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:09:08,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:09:08,832 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:09:08,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:09:09,062 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:09:09,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:09 WrapperNode [2019-10-07 13:09:09,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:09:09,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:09:09,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:09:09,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:09:09,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:09" (1/1) ... [2019-10-07 13:09:09,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:09" (1/1) ... [2019-10-07 13:09:09,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:09" (1/1) ... [2019-10-07 13:09:09,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:09" (1/1) ... [2019-10-07 13:09:09,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:09" (1/1) ... [2019-10-07 13:09:09,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:09" (1/1) ... [2019-10-07 13:09:09,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:09" (1/1) ... [2019-10-07 13:09:09,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:09:09,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:09:09,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:09:09,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:09:09,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:09:09,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:09:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:09:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-10-07 13:09:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-07 13:09:09,396 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-10-07 13:09:09,397 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-10-07 13:09:09,397 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2019-10-07 13:09:09,399 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-07 13:09:09,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-07 13:09:09,399 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2019-10-07 13:09:09,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-07 13:09:09,401 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-07 13:09:09,401 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-07 13:09:09,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-07 13:09:09,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-07 13:09:09,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-07 13:09:09,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-07 13:09:09,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-07 13:09:09,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-07 13:09:09,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-07 13:09:09,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-07 13:09:09,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-07 13:09:09,408 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2019-10-07 13:09:09,409 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2019-10-07 13:09:09,409 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2019-10-07 13:09:09,409 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2019-10-07 13:09:09,409 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2019-10-07 13:09:09,410 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2019-10-07 13:09:09,410 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2019-10-07 13:09:09,410 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_irq [2019-10-07 13:09:09,411 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_open [2019-10-07 13:09:09,411 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_close [2019-10-07 13:09:09,412 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_probe [2019-10-07 13:09:09,412 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_disconnect [2019-10-07 13:09:09,412 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_init [2019-10-07 13:09:09,413 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_exit [2019-10-07 13:09:09,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-10-07 13:09:09,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:09:09,414 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-07 13:09:09,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-10-07 13:09:09,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2019-10-07 13:09:09,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2019-10-07 13:09:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_5 [2019-10-07 13:09:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_6 [2019-10-07 13:09:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_7 [2019-10-07 13:09:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_8 [2019-10-07 13:09:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_10 [2019-10-07 13:09:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-10-07 13:09:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-07 13:09:09,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2019-10-07 13:09:09,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2019-10-07 13:09:09,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2019-10-07 13:09:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2019-10-07 13:09:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2019-10-07 13:09:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2019-10-07 13:09:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2019-10-07 13:09:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-10-07 13:09:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2019-10-07 13:09:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2019-10-07 13:09:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2019-10-07 13:09:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2019-10-07 13:09:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2019-10-07 13:09:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2019-10-07 13:09:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2019-10-07 13:09:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-07 13:09:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-07 13:09:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-07 13:09:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2019-10-07 13:09:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2019-10-07 13:09:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2019-10-07 13:09:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2019-10-07 13:09:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2019-10-07 13:09:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-07 13:09:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-07 13:09:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2019-10-07 13:09:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2019-10-07 13:09:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-10-07 13:09:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-07 13:09:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-07 13:09:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-10-07 13:09:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-07 13:09:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-07 13:09:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-07 13:09:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-07 13:09:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-07 13:09:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-07 13:09:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-07 13:09:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-07 13:09:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:09:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-07 13:09:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-07 13:09:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:09:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-10-07 13:09:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-10-07 13:09:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-07 13:09:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-07 13:09:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-07 13:09:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-07 13:09:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-07 13:09:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2019-10-07 13:09:09,436 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2019-10-07 13:09:09,436 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-07 13:09:09,436 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-07 13:09:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_8 [2019-10-07 13:09:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_7 [2019-10-07 13:09:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-07 13:09:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2019-10-07 13:09:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:09:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:09:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-07 13:09:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-10-07 13:09:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-07 13:09:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-07 13:09:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-10-07 13:09:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_6 [2019-10-07 13:09:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-07 13:09:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_5 [2019-10-07 13:09:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-07 13:09:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_10 [2019-10-07 13:09:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2019-10-07 13:09:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2019-10-07 13:09:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-07 13:09:09,442 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-10-07 13:09:09,442 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-10-07 13:09:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-07 13:09:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2019-10-07 13:09:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2019-10-07 13:09:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2019-10-07 13:09:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2019-10-07 13:09:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-10-07 13:09:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2019-10-07 13:09:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2019-10-07 13:09:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2019-10-07 13:09:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-07 13:09:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-07 13:09:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-07 13:09:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-07 13:09:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-07 13:09:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:09:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 13:09:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:09:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-07 13:09:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-07 13:09:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:09:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:09:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-07 13:09:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-07 13:09:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-07 13:09:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-07 13:09:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-07 13:09:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-07 13:09:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-07 13:09:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-07 13:09:09,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-07 13:09:09,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-10-07 13:09:09,465 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2019-10-07 13:09:09,465 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2019-10-07 13:09:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2019-10-07 13:09:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2019-10-07 13:09:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2019-10-07 13:09:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2019-10-07 13:09:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2019-10-07 13:09:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2019-10-07 13:09:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2019-10-07 13:09:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2019-10-07 13:09:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2019-10-07 13:09:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2019-10-07 13:09:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:09:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_irq [2019-10-07 13:09:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_open [2019-10-07 13:09:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:09:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_close [2019-10-07 13:09:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_probe [2019-10-07 13:09:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_disconnect [2019-10-07 13:09:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_init [2019-10-07 13:09:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_exit [2019-10-07 13:09:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-07 13:09:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-07 13:09:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:09:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-07 13:09:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2019-10-07 13:09:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2019-10-07 13:09:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-10-07 13:09:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2019-10-07 13:09:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2019-10-07 13:09:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2019-10-07 13:09:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2019-10-07 13:09:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2019-10-07 13:09:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2019-10-07 13:09:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-07 13:09:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:09:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:09:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:09:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 13:09:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-07 13:09:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:09:10,356 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-07 13:09:12,057 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:09:12,057 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-07 13:09:12,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:09:12 BoogieIcfgContainer [2019-10-07 13:09:12,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:09:12,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:09:12,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:09:12,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:09:12,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:09:07" (1/3) ... [2019-10-07 13:09:12,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1705e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:09:12, skipping insertion in model container [2019-10-07 13:09:12,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:09:09" (2/3) ... [2019-10-07 13:09:12,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1705e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:09:12, skipping insertion in model container [2019-10-07 13:09:12,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:09:12" (3/3) ... [2019-10-07 13:09:12,071 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-07 13:09:12,084 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:09:12,099 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:09:12,113 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:09:12,157 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:09:12,157 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:09:12,158 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:09:12,158 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:09:12,158 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:09:12,158 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:09:12,158 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:09:12,158 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:09:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2019-10-07 13:09:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 13:09:12,208 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:12,209 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 13:09:12,211 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:12,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:12,218 INFO L82 PathProgramCache]: Analyzing trace with hash 40251044, now seen corresponding path program 1 times [2019-10-07 13:09:12,227 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:12,228 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:12,228 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:12,228 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:12,712 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 13:09:12,712 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:12,713 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:12,713 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:12,718 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:12,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:12,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:12,736 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 3 states. [2019-10-07 13:09:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:12,940 INFO L93 Difference]: Finished difference Result 879 states and 1042 transitions. [2019-10-07 13:09:12,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:12,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-10-07 13:09:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:13,015 INFO L225 Difference]: With dead ends: 879 [2019-10-07 13:09:13,015 INFO L226 Difference]: Without dead ends: 556 [2019-10-07 13:09:13,026 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 13:09:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2019-10-07 13:09:13,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2019-10-07 13:09:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-07 13:09:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 646 transitions. [2019-10-07 13:09:13,226 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 646 transitions. Word has length 38 [2019-10-07 13:09:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:13,227 INFO L462 AbstractCegarLoop]: Abstraction has 556 states and 646 transitions. [2019-10-07 13:09:13,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 646 transitions. [2019-10-07 13:09:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-07 13:09:13,235 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:13,235 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 13:09:13,236 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:13,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1444432789, now seen corresponding path program 1 times [2019-10-07 13:09:13,239 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:13,239 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:13,239 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:13,239 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:13,506 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 13:09:13,507 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:13,507 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:13,508 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:13,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:13,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:13,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:13,513 INFO L87 Difference]: Start difference. First operand 556 states and 646 transitions. Second operand 3 states. [2019-10-07 13:09:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:13,606 INFO L93 Difference]: Finished difference Result 939 states and 1088 transitions. [2019-10-07 13:09:13,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:13,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-10-07 13:09:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:13,624 INFO L225 Difference]: With dead ends: 939 [2019-10-07 13:09:13,624 INFO L226 Difference]: Without dead ends: 936 [2019-10-07 13:09:13,626 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 13:09:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2019-10-07 13:09:13,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 928. [2019-10-07 13:09:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2019-10-07 13:09:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1076 transitions. [2019-10-07 13:09:13,709 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1076 transitions. Word has length 57 [2019-10-07 13:09:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:13,710 INFO L462 AbstractCegarLoop]: Abstraction has 928 states and 1076 transitions. [2019-10-07 13:09:13,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1076 transitions. [2019-10-07 13:09:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-07 13:09:13,712 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:13,712 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 13:09:13,713 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:13,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1827601028, now seen corresponding path program 1 times [2019-10-07 13:09:13,713 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:13,714 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:13,714 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:13,714 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:13,827 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 13:09:13,827 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:13,827 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:13,828 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:13,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:13,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:13,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:13,829 INFO L87 Difference]: Start difference. First operand 928 states and 1076 transitions. Second operand 3 states. [2019-10-07 13:09:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:13,882 INFO L93 Difference]: Finished difference Result 930 states and 1077 transitions. [2019-10-07 13:09:13,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:13,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-10-07 13:09:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:13,891 INFO L225 Difference]: With dead ends: 930 [2019-10-07 13:09:13,892 INFO L226 Difference]: Without dead ends: 927 [2019-10-07 13:09:13,893 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 13:09:13,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2019-10-07 13:09:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2019-10-07 13:09:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2019-10-07 13:09:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1074 transitions. [2019-10-07 13:09:13,960 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1074 transitions. Word has length 58 [2019-10-07 13:09:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:13,963 INFO L462 AbstractCegarLoop]: Abstraction has 927 states and 1074 transitions. [2019-10-07 13:09:13,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1074 transitions. [2019-10-07 13:09:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-07 13:09:13,966 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:13,966 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 13:09:13,967 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:13,967 INFO L82 PathProgramCache]: Analyzing trace with hash 820919416, now seen corresponding path program 1 times [2019-10-07 13:09:13,968 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:13,968 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:13,969 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:13,969 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:14,115 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 13:09:14,200 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:14,201 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:14,201 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:14,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:14,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:14,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:14,203 INFO L87 Difference]: Start difference. First operand 927 states and 1074 transitions. Second operand 3 states. [2019-10-07 13:09:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:14,243 INFO L93 Difference]: Finished difference Result 929 states and 1075 transitions. [2019-10-07 13:09:14,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:14,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-10-07 13:09:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:14,249 INFO L225 Difference]: With dead ends: 929 [2019-10-07 13:09:14,249 INFO L226 Difference]: Without dead ends: 926 [2019-10-07 13:09:14,250 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 13:09:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2019-10-07 13:09:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2019-10-07 13:09:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2019-10-07 13:09:14,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1072 transitions. [2019-10-07 13:09:14,302 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1072 transitions. Word has length 59 [2019-10-07 13:09:14,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:14,302 INFO L462 AbstractCegarLoop]: Abstraction has 926 states and 1072 transitions. [2019-10-07 13:09:14,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:14,302 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1072 transitions. [2019-10-07 13:09:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-07 13:09:14,304 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:14,304 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 13:09:14,304 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:14,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:14,305 INFO L82 PathProgramCache]: Analyzing trace with hash -321434617, now seen corresponding path program 1 times [2019-10-07 13:09:14,305 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:14,305 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:14,305 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:14,305 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:14,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:14,402 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 13:09:14,403 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:14,403 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:14,403 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:14,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:14,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:14,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:14,409 INFO L87 Difference]: Start difference. First operand 926 states and 1072 transitions. Second operand 3 states. [2019-10-07 13:09:14,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:14,452 INFO L93 Difference]: Finished difference Result 928 states and 1073 transitions. [2019-10-07 13:09:14,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:14,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-10-07 13:09:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:14,458 INFO L225 Difference]: With dead ends: 928 [2019-10-07 13:09:14,458 INFO L226 Difference]: Without dead ends: 909 [2019-10-07 13:09:14,459 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 13:09:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2019-10-07 13:09:14,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2019-10-07 13:09:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2019-10-07 13:09:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1052 transitions. [2019-10-07 13:09:14,516 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1052 transitions. Word has length 60 [2019-10-07 13:09:14,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:14,518 INFO L462 AbstractCegarLoop]: Abstraction has 909 states and 1052 transitions. [2019-10-07 13:09:14,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:14,518 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1052 transitions. [2019-10-07 13:09:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-07 13:09:14,526 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:14,526 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] [2019-10-07 13:09:14,526 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:14,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:14,527 INFO L82 PathProgramCache]: Analyzing trace with hash 198805745, now seen corresponding path program 1 times [2019-10-07 13:09:14,528 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:14,528 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:14,528 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:14,528 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:14,671 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 13:09:14,672 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:14,672 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:14,672 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:09:14,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:09:14,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:09:14,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:09:14,674 INFO L87 Difference]: Start difference. First operand 909 states and 1052 transitions. Second operand 3 states. [2019-10-07 13:09:14,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:14,760 INFO L93 Difference]: Finished difference Result 1463 states and 1707 transitions. [2019-10-07 13:09:14,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:09:14,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2019-10-07 13:09:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:14,765 INFO L225 Difference]: With dead ends: 1463 [2019-10-07 13:09:14,766 INFO L226 Difference]: Without dead ends: 571 [2019-10-07 13:09:14,769 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 13:09:14,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-10-07 13:09:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 539. [2019-10-07 13:09:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-07 13:09:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 630 transitions. [2019-10-07 13:09:14,811 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 630 transitions. Word has length 185 [2019-10-07 13:09:14,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:14,812 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 630 transitions. [2019-10-07 13:09:14,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:09:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 630 transitions. [2019-10-07 13:09:14,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-07 13:09:14,867 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:14,867 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] [2019-10-07 13:09:14,867 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:14,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:14,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2141459039, now seen corresponding path program 1 times [2019-10-07 13:09:14,870 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:14,870 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:14,871 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:14,871 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:15,058 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 13:09:15,059 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:15,059 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:15,059 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 13:09:15,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:09:15,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:09:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:09:15,062 INFO L87 Difference]: Start difference. First operand 539 states and 630 transitions. Second operand 6 states. [2019-10-07 13:09:15,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:15,146 INFO L93 Difference]: Finished difference Result 1060 states and 1243 transitions. [2019-10-07 13:09:15,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:09:15,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2019-10-07 13:09:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:15,150 INFO L225 Difference]: With dead ends: 1060 [2019-10-07 13:09:15,151 INFO L226 Difference]: Without dead ends: 551 [2019-10-07 13:09:15,153 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 13:09:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2019-10-07 13:09:15,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2019-10-07 13:09:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-10-07 13:09:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 640 transitions. [2019-10-07 13:09:15,184 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 640 transitions. Word has length 202 [2019-10-07 13:09:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:15,184 INFO L462 AbstractCegarLoop]: Abstraction has 549 states and 640 transitions. [2019-10-07 13:09:15,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:09:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 640 transitions. [2019-10-07 13:09:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-07 13:09:15,188 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:15,189 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] [2019-10-07 13:09:15,189 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:15,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:15,190 INFO L82 PathProgramCache]: Analyzing trace with hash -539006450, now seen corresponding path program 1 times [2019-10-07 13:09:15,190 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:15,190 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:15,190 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:15,190 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:15,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 13:09:15,769 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:15,769 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:09:15,769 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 13:09:15,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 13:09:15,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 13:09:15,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:09:15,771 INFO L87 Difference]: Start difference. First operand 549 states and 640 transitions. Second operand 9 states. [2019-10-07 13:09:17,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:17,186 INFO L93 Difference]: Finished difference Result 789 states and 923 transitions. [2019-10-07 13:09:17,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 13:09:17,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2019-10-07 13:09:17,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:17,191 INFO L225 Difference]: With dead ends: 789 [2019-10-07 13:09:17,192 INFO L226 Difference]: Without dead ends: 773 [2019-10-07 13:09:17,196 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:09:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-10-07 13:09:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 557. [2019-10-07 13:09:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2019-10-07 13:09:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 652 transitions. [2019-10-07 13:09:17,238 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 652 transitions. Word has length 206 [2019-10-07 13:09:17,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:17,242 INFO L462 AbstractCegarLoop]: Abstraction has 557 states and 652 transitions. [2019-10-07 13:09:17,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 13:09:17,242 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 652 transitions. [2019-10-07 13:09:17,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-07 13:09:17,246 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:17,246 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:09:17,247 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:17,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:17,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1888293338, now seen corresponding path program 1 times [2019-10-07 13:09:17,247 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:17,247 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:17,248 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:17,249 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-07 13:09:17,559 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:17,559 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:09:17,559 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 13:09:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:18,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 2121 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-07 13:09:18,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:09:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:09:18,328 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:09:18,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:09:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-07 13:09:18,932 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:09:18,933 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6] total 12 [2019-10-07 13:09:18,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 13:09:18,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 13:09:18,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:09:18,936 INFO L87 Difference]: Start difference. First operand 557 states and 652 transitions. Second operand 8 states. [2019-10-07 13:09:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:09:20,525 INFO L93 Difference]: Finished difference Result 1402 states and 1644 transitions. [2019-10-07 13:09:20,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 13:09:20,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 250 [2019-10-07 13:09:20,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:09:20,537 INFO L225 Difference]: With dead ends: 1402 [2019-10-07 13:09:20,537 INFO L226 Difference]: Without dead ends: 1386 [2019-10-07 13:09:20,539 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 494 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 13:09:20,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2019-10-07 13:09:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1358. [2019-10-07 13:09:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2019-10-07 13:09:20,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1597 transitions. [2019-10-07 13:09:20,672 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1597 transitions. Word has length 250 [2019-10-07 13:09:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:09:20,678 INFO L462 AbstractCegarLoop]: Abstraction has 1358 states and 1597 transitions. [2019-10-07 13:09:20,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 13:09:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1597 transitions. [2019-10-07 13:09:20,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-07 13:09:20,688 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:09:20,689 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:09:20,905 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:09:20,905 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:09:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:09:20,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1819485890, now seen corresponding path program 1 times [2019-10-07 13:09:20,909 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:09:20,909 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:09:20,910 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:20,910 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:09:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:09:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:09:21,781 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 13:09:21,787 INFO L168 Benchmark]: Toolchain (without parser) took 14284.08 ms. Allocated memory was 145.8 MB in the beginning and 508.6 MB in the end (delta: 362.8 MB). Free memory was 97.9 MB in the beginning and 332.7 MB in the end (delta: -234.8 MB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:09:21,788 INFO L168 Benchmark]: CDTParser took 1.37 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:09:21,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1559.96 ms. Allocated memory was 145.8 MB in the beginning and 207.1 MB in the end (delta: 61.3 MB). Free memory was 97.5 MB in the beginning and 118.2 MB in the end (delta: -20.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:09:21,790 INFO L168 Benchmark]: Boogie Preprocessor took 231.98 ms. Allocated memory is still 207.1 MB. Free memory was 118.2 MB in the beginning and 110.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:09:21,791 INFO L168 Benchmark]: RCFGBuilder took 2764.43 ms. Allocated memory was 207.1 MB in the beginning and 258.5 MB in the end (delta: 51.4 MB). Free memory was 110.2 MB in the beginning and 129.3 MB in the end (delta: -19.0 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. [2019-10-07 13:09:21,791 INFO L168 Benchmark]: TraceAbstraction took 9723.11 ms. Allocated memory was 258.5 MB in the beginning and 508.6 MB in the end (delta: 250.1 MB). Free memory was 127.4 MB in the beginning and 332.7 MB in the end (delta: -205.3 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2019-10-07 13:09:21,795 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1559.96 ms. Allocated memory was 145.8 MB in the beginning and 207.1 MB in the end (delta: 61.3 MB). Free memory was 97.5 MB in the beginning and 118.2 MB in the end (delta: -20.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 231.98 ms. Allocated memory is still 207.1 MB. Free memory was 118.2 MB in the beginning and 110.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2764.43 ms. Allocated memory was 207.1 MB in the beginning and 258.5 MB in the end (delta: 51.4 MB). Free memory was 110.2 MB in the beginning and 129.3 MB in the end (delta: -19.0 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9723.11 ms. Allocated memory was 258.5 MB in the beginning and 508.6 MB in the end (delta: 250.1 MB). Free memory was 127.4 MB in the beginning and 332.7 MB in the end (delta: -205.3 MB). Peak memory consumption was 44.8 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...