/usr/bin/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-fb55353 [2019-11-07 03:53:40,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:53:40,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:53:40,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:53:40,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:53:40,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:53:40,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:53:40,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:53:40,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:53:40,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:53:40,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:53:40,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:53:40,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:53:40,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:53:40,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:53:40,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:53:40,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:53:40,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:53:40,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:53:40,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:53:40,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:53:40,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:53:40,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:53:40,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:53:40,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 03:53:40,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 03:53:40,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 03:53:40,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 03:53:40,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 03:53:40,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 03:53:40,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 03:53:40,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 03:53:40,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 03:53:40,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 03:53:40,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 03:53:40,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 03:53:40,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 03:53:40,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 03:53:40,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:53:40,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:53:40,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:53:40,613 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 [2019-11-07 03:53:40,628 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:53:40,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:53:40,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:53:40,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:53:40,630 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:53:40,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:53:40,630 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:53:40,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:53:40,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:53:40,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:53:40,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:53:40,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:53:40,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:53:40,632 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:53:40,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:53:40,632 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:53:40,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:53:40,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:53:40,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:53:40,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:53:40,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:53:40,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:53:40,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:53:40,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:53:40,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:53:40,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:53:40,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:53:40,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:53:40,635 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 [2019-11-07 03:53:40,922 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:53:40,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:53:40,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:53:40,946 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:53:40,947 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:53:40,947 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-07 03:53:41,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd76ed97/178a3e1ea72c482b95418e1cb97c4e93/FLAGafd70a46f [2019-11-07 03:53:41,760 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:53:41,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-07 03:53:41,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd76ed97/178a3e1ea72c482b95418e1cb97c4e93/FLAGafd70a46f [2019-11-07 03:53:41,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd76ed97/178a3e1ea72c482b95418e1cb97c4e93 [2019-11-07 03:53:41,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:53:41,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:53:41,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:53:41,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:53:41,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:53:41,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:53:41" (1/1) ... [2019-11-07 03:53:41,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44932c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:41, skipping insertion in model container [2019-11-07 03:53:41,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:53:41" (1/1) ... [2019-11-07 03:53:41,947 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:53:42,072 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:53:43,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:53:43,367 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:53:43,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:53:43,785 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:53:43,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:43 WrapperNode [2019-11-07 03:53:43,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:53:43,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:53:43,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:53:43,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:53:43,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:43" (1/1) ... [2019-11-07 03:53:43,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:43" (1/1) ... [2019-11-07 03:53:43,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:43" (1/1) ... [2019-11-07 03:53:43,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:43" (1/1) ... [2019-11-07 03:53:43,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:43" (1/1) ... [2019-11-07 03:53:43,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:43" (1/1) ... [2019-11-07 03:53:43,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:43" (1/1) ... [2019-11-07 03:53:43,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:53:43,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:53:43,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:53:43,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:53:43,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:43" (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 [2019-11-07 03:53:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:53:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:53:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-07 03:53:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-11-07 03:53:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-11-07 03:53:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-11-07 03:53:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2019-11-07 03:53:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-11-07 03:53:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-11-07 03:53:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2019-11-07 03:53:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 03:53:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 03:53:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-07 03:53:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 03:53:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 03:53:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-11-07 03:53:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-11-07 03:53:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 03:53:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 03:53:44,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 03:53:44,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 03:53:44,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 03:53:44,056 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2019-11-07 03:53:44,056 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2019-11-07 03:53:44,056 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2019-11-07 03:53:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2019-11-07 03:53:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2019-11-07 03:53:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2019-11-07 03:53:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2019-11-07 03:53:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_irq [2019-11-07 03:53:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_open [2019-11-07 03:53:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_close [2019-11-07 03:53:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_probe [2019-11-07 03:53:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_disconnect [2019-11-07 03:53:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_init [2019-11-07 03:53:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_exit [2019-11-07 03:53:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-11-07 03:53:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:53:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-11-07 03:53:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-11-07 03:53:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2019-11-07 03:53:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2019-11-07 03:53:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_5 [2019-11-07 03:53:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_6 [2019-11-07 03:53:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_7 [2019-11-07 03:53:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_8 [2019-11-07 03:53:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_10 [2019-11-07 03:53:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-11-07 03:53:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 03:53:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2019-11-07 03:53:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2019-11-07 03:53:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2019-11-07 03:53:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2019-11-07 03:53:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2019-11-07 03:53:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2019-11-07 03:53:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2019-11-07 03:53:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-11-07 03:53:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2019-11-07 03:53:44,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2019-11-07 03:53:44,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2019-11-07 03:53:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2019-11-07 03:53:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2019-11-07 03:53:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2019-11-07 03:53:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2019-11-07 03:53:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 03:53:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-11-07 03:53:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-11-07 03:53:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2019-11-07 03:53:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2019-11-07 03:53:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2019-11-07 03:53:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2019-11-07 03:53:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2019-11-07 03:53:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 03:53:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 03:53:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2019-11-07 03:53:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2019-11-07 03:53:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-11-07 03:53:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-11-07 03:53:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-11-07 03:53:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-11-07 03:53:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-11-07 03:53:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-11-07 03:53:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-11-07 03:53:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-11-07 03:53:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 03:53:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 03:53:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-07 03:53:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 03:53:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:53:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 03:53:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-11-07 03:53:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:53:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-11-07 03:53:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-11-07 03:53:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-11-07 03:53:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-11-07 03:53:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 03:53:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-07 03:53:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-11-07 03:53:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2019-11-07 03:53:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2019-11-07 03:53:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-11-07 03:53:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-11-07 03:53:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_8 [2019-11-07 03:53:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_7 [2019-11-07 03:53:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-11-07 03:53:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2019-11-07 03:53:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:53:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:53:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-11-07 03:53:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-11-07 03:53:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-11-07 03:53:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-11-07 03:53:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-11-07 03:53:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_6 [2019-11-07 03:53:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-11-07 03:53:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_5 [2019-11-07 03:53:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-11-07 03:53:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_10 [2019-11-07 03:53:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2019-11-07 03:53:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2019-11-07 03:53:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-11-07 03:53:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-11-07 03:53:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-11-07 03:53:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-11-07 03:53:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2019-11-07 03:53:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2019-11-07 03:53:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2019-11-07 03:53:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2019-11-07 03:53:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-11-07 03:53:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2019-11-07 03:53:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2019-11-07 03:53:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2019-11-07 03:53:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 03:53:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 03:53:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 03:53:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 03:53:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-07 03:53:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 03:53:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 03:53:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:53:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 03:53:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 03:53:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 03:53:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 03:53:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 03:53:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 03:53:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-11-07 03:53:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-11-07 03:53:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-07 03:53:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 03:53:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 03:53:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 03:53:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 03:53:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-11-07 03:53:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2019-11-07 03:53:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2019-11-07 03:53:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2019-11-07 03:53:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2019-11-07 03:53:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2019-11-07 03:53:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2019-11-07 03:53:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2019-11-07 03:53:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2019-11-07 03:53:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2019-11-07 03:53:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2019-11-07 03:53:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2019-11-07 03:53:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2019-11-07 03:53:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:53:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_irq [2019-11-07 03:53:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_open [2019-11-07 03:53:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:53:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_close [2019-11-07 03:53:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_probe [2019-11-07 03:53:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_disconnect [2019-11-07 03:53:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_init [2019-11-07 03:53:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_exit [2019-11-07 03:53:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 03:53:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 03:53:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:53:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 03:53:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2019-11-07 03:53:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2019-11-07 03:53:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-07 03:53:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2019-11-07 03:53:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2019-11-07 03:53:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2019-11-07 03:53:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2019-11-07 03:53:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2019-11-07 03:53:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2019-11-07 03:53:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 03:53:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 03:53:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:53:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:53:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 03:53:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 03:53:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:53:44,640 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 03:53:46,211 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:53:46,212 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 03:53:46,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:53:46 BoogieIcfgContainer [2019-11-07 03:53:46,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:53:46,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:53:46,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:53:46,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:53:46,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:53:41" (1/3) ... [2019-11-07 03:53:46,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11164a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:53:46, skipping insertion in model container [2019-11-07 03:53:46,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:43" (2/3) ... [2019-11-07 03:53:46,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11164a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:53:46, skipping insertion in model container [2019-11-07 03:53:46,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:53:46" (3/3) ... [2019-11-07 03:53:46,224 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 [2019-11-07 03:53:46,235 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:53:46,248 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:53:46,262 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:53:46,302 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:53:46,302 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:53:46,302 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:53:46,303 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:53:46,303 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:53:46,303 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:53:46,303 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:53:46,303 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:53:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2019-11-07 03:53:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-07 03:53:46,354 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:46,355 INFO L410 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] [2019-11-07 03:53:46,358 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:46,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:46,365 INFO L82 PathProgramCache]: Analyzing trace with hash 40251044, now seen corresponding path program 1 times [2019-11-07 03:53:46,377 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:46,377 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472485305] [2019-11-07 03:53:46,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:53:46,926 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472485305] [2019-11-07 03:53:46,927 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:46,927 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:46,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848277923] [2019-11-07 03:53:46,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:46,936 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:46,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:46,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:46,954 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 3 states. [2019-11-07 03:53:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:47,173 INFO L93 Difference]: Finished difference Result 879 states and 1042 transitions. [2019-11-07 03:53:47,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:47,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-11-07 03:53:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:47,196 INFO L225 Difference]: With dead ends: 879 [2019-11-07 03:53:47,196 INFO L226 Difference]: Without dead ends: 556 [2019-11-07 03:53:47,203 INFO L630 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 [2019-11-07 03:53:47,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2019-11-07 03:53:47,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2019-11-07 03:53:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-11-07 03:53:47,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 646 transitions. [2019-11-07 03:53:47,417 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 646 transitions. Word has length 38 [2019-11-07 03:53:47,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:47,417 INFO L462 AbstractCegarLoop]: Abstraction has 556 states and 646 transitions. [2019-11-07 03:53:47,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:47,418 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 646 transitions. [2019-11-07 03:53:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 03:53:47,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:47,433 INFO L410 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] [2019-11-07 03:53:47,435 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:47,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:47,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1444432789, now seen corresponding path program 1 times [2019-11-07 03:53:47,436 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:47,436 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775619913] [2019-11-07 03:53:47,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 03:53:47,648 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775619913] [2019-11-07 03:53:47,649 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:47,649 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:47,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792257155] [2019-11-07 03:53:47,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:47,651 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:47,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:47,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:47,652 INFO L87 Difference]: Start difference. First operand 556 states and 646 transitions. Second operand 3 states. [2019-11-07 03:53:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:47,727 INFO L93 Difference]: Finished difference Result 939 states and 1088 transitions. [2019-11-07 03:53:47,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:47,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-11-07 03:53:47,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:47,745 INFO L225 Difference]: With dead ends: 939 [2019-11-07 03:53:47,745 INFO L226 Difference]: Without dead ends: 936 [2019-11-07 03:53:47,747 INFO L630 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 [2019-11-07 03:53:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2019-11-07 03:53:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 928. [2019-11-07 03:53:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2019-11-07 03:53:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1076 transitions. [2019-11-07 03:53:47,841 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1076 transitions. Word has length 57 [2019-11-07 03:53:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:47,842 INFO L462 AbstractCegarLoop]: Abstraction has 928 states and 1076 transitions. [2019-11-07 03:53:47,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1076 transitions. [2019-11-07 03:53:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 03:53:47,853 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:47,854 INFO L410 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] [2019-11-07 03:53:47,854 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:47,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:47,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1827601028, now seen corresponding path program 1 times [2019-11-07 03:53:47,855 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:47,855 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509455399] [2019-11-07 03:53:47,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 03:53:48,027 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509455399] [2019-11-07 03:53:48,028 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:48,028 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:48,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511135634] [2019-11-07 03:53:48,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:48,029 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:48,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:48,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:48,030 INFO L87 Difference]: Start difference. First operand 928 states and 1076 transitions. Second operand 3 states. [2019-11-07 03:53:48,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:48,074 INFO L93 Difference]: Finished difference Result 930 states and 1077 transitions. [2019-11-07 03:53:48,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:48,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-11-07 03:53:48,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:48,081 INFO L225 Difference]: With dead ends: 930 [2019-11-07 03:53:48,081 INFO L226 Difference]: Without dead ends: 927 [2019-11-07 03:53:48,083 INFO L630 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 [2019-11-07 03:53:48,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2019-11-07 03:53:48,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2019-11-07 03:53:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2019-11-07 03:53:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1074 transitions. [2019-11-07 03:53:48,136 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1074 transitions. Word has length 58 [2019-11-07 03:53:48,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:48,138 INFO L462 AbstractCegarLoop]: Abstraction has 927 states and 1074 transitions. [2019-11-07 03:53:48,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:48,139 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1074 transitions. [2019-11-07 03:53:48,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 03:53:48,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:48,142 INFO L410 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] [2019-11-07 03:53:48,142 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:48,142 INFO L82 PathProgramCache]: Analyzing trace with hash 820919416, now seen corresponding path program 1 times [2019-11-07 03:53:48,142 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:48,143 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511882625] [2019-11-07 03:53:48,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 03:53:48,301 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511882625] [2019-11-07 03:53:48,301 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:48,301 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:48,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377416814] [2019-11-07 03:53:48,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:48,302 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:48,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:48,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:48,303 INFO L87 Difference]: Start difference. First operand 927 states and 1074 transitions. Second operand 3 states. [2019-11-07 03:53:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:48,391 INFO L93 Difference]: Finished difference Result 929 states and 1075 transitions. [2019-11-07 03:53:48,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:48,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-11-07 03:53:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:48,396 INFO L225 Difference]: With dead ends: 929 [2019-11-07 03:53:48,396 INFO L226 Difference]: Without dead ends: 926 [2019-11-07 03:53:48,397 INFO L630 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 [2019-11-07 03:53:48,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2019-11-07 03:53:48,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2019-11-07 03:53:48,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2019-11-07 03:53:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1072 transitions. [2019-11-07 03:53:48,449 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1072 transitions. Word has length 59 [2019-11-07 03:53:48,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:48,450 INFO L462 AbstractCegarLoop]: Abstraction has 926 states and 1072 transitions. [2019-11-07 03:53:48,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:48,450 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1072 transitions. [2019-11-07 03:53:48,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 03:53:48,453 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:48,453 INFO L410 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] [2019-11-07 03:53:48,453 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:48,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:48,454 INFO L82 PathProgramCache]: Analyzing trace with hash -321434617, now seen corresponding path program 1 times [2019-11-07 03:53:48,454 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:48,454 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44633214] [2019-11-07 03:53:48,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 03:53:48,593 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44633214] [2019-11-07 03:53:48,593 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:48,594 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:48,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268726906] [2019-11-07 03:53:48,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:48,595 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:48,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:48,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:48,595 INFO L87 Difference]: Start difference. First operand 926 states and 1072 transitions. Second operand 3 states. [2019-11-07 03:53:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:48,642 INFO L93 Difference]: Finished difference Result 928 states and 1073 transitions. [2019-11-07 03:53:48,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:48,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-11-07 03:53:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:48,648 INFO L225 Difference]: With dead ends: 928 [2019-11-07 03:53:48,648 INFO L226 Difference]: Without dead ends: 909 [2019-11-07 03:53:48,649 INFO L630 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 [2019-11-07 03:53:48,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2019-11-07 03:53:48,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2019-11-07 03:53:48,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2019-11-07 03:53:48,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1052 transitions. [2019-11-07 03:53:48,715 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1052 transitions. Word has length 60 [2019-11-07 03:53:48,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:48,715 INFO L462 AbstractCegarLoop]: Abstraction has 909 states and 1052 transitions. [2019-11-07 03:53:48,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:48,716 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1052 transitions. [2019-11-07 03:53:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-11-07 03:53:48,719 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:48,719 INFO L410 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] [2019-11-07 03:53:48,720 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:48,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:48,720 INFO L82 PathProgramCache]: Analyzing trace with hash 198805745, now seen corresponding path program 1 times [2019-11-07 03:53:48,720 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:48,721 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187122348] [2019-11-07 03:53:48,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 03:53:48,854 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187122348] [2019-11-07 03:53:48,854 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:48,854 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:48,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161611904] [2019-11-07 03:53:48,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:48,855 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:48,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:48,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:48,856 INFO L87 Difference]: Start difference. First operand 909 states and 1052 transitions. Second operand 3 states. [2019-11-07 03:53:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:48,922 INFO L93 Difference]: Finished difference Result 1463 states and 1707 transitions. [2019-11-07 03:53:48,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:48,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2019-11-07 03:53:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:48,926 INFO L225 Difference]: With dead ends: 1463 [2019-11-07 03:53:48,926 INFO L226 Difference]: Without dead ends: 571 [2019-11-07 03:53:48,929 INFO L630 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 [2019-11-07 03:53:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-11-07 03:53:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 539. [2019-11-07 03:53:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-11-07 03:53:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 630 transitions. [2019-11-07 03:53:48,958 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 630 transitions. Word has length 185 [2019-11-07 03:53:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:48,958 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 630 transitions. [2019-11-07 03:53:48,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 630 transitions. [2019-11-07 03:53:48,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-11-07 03:53:48,962 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:48,962 INFO L410 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] [2019-11-07 03:53:48,963 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:48,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:48,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2141459039, now seen corresponding path program 1 times [2019-11-07 03:53:48,963 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:48,964 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963906254] [2019-11-07 03:53:48,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 03:53:49,224 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963906254] [2019-11-07 03:53:49,224 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:49,224 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 03:53:49,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970523288] [2019-11-07 03:53:49,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 03:53:49,225 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:49,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 03:53:49,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 03:53:49,226 INFO L87 Difference]: Start difference. First operand 539 states and 630 transitions. Second operand 6 states. [2019-11-07 03:53:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:49,302 INFO L93 Difference]: Finished difference Result 1060 states and 1243 transitions. [2019-11-07 03:53:49,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 03:53:49,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2019-11-07 03:53:49,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:49,306 INFO L225 Difference]: With dead ends: 1060 [2019-11-07 03:53:49,306 INFO L226 Difference]: Without dead ends: 551 [2019-11-07 03:53:49,308 INFO L630 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 [2019-11-07 03:53:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2019-11-07 03:53:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2019-11-07 03:53:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-11-07 03:53:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 640 transitions. [2019-11-07 03:53:49,337 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 640 transitions. Word has length 202 [2019-11-07 03:53:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:49,337 INFO L462 AbstractCegarLoop]: Abstraction has 549 states and 640 transitions. [2019-11-07 03:53:49,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 03:53:49,338 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 640 transitions. [2019-11-07 03:53:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-11-07 03:53:49,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:49,342 INFO L410 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] [2019-11-07 03:53:49,342 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:49,342 INFO L82 PathProgramCache]: Analyzing trace with hash -539006450, now seen corresponding path program 1 times [2019-11-07 03:53:49,343 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:49,343 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658481585] [2019-11-07 03:53:49,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 03:53:49,877 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658481585] [2019-11-07 03:53:49,877 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:49,878 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 03:53:49,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251892190] [2019-11-07 03:53:49,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 03:53:49,879 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:49,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 03:53:49,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-07 03:53:49,879 INFO L87 Difference]: Start difference. First operand 549 states and 640 transitions. Second operand 9 states. [2019-11-07 03:53:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:51,272 INFO L93 Difference]: Finished difference Result 789 states and 923 transitions. [2019-11-07 03:53:51,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 03:53:51,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2019-11-07 03:53:51,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:51,283 INFO L225 Difference]: With dead ends: 789 [2019-11-07 03:53:51,284 INFO L226 Difference]: Without dead ends: 773 [2019-11-07 03:53:51,286 INFO L630 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 [2019-11-07 03:53:51,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-11-07 03:53:51,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 557. [2019-11-07 03:53:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2019-11-07 03:53:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 652 transitions. [2019-11-07 03:53:51,321 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 652 transitions. Word has length 206 [2019-11-07 03:53:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:51,321 INFO L462 AbstractCegarLoop]: Abstraction has 557 states and 652 transitions. [2019-11-07 03:53:51,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 03:53:51,322 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 652 transitions. [2019-11-07 03:53:51,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-11-07 03:53:51,326 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:51,326 INFO L410 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] [2019-11-07 03:53:51,327 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:51,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:51,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1888293338, now seen corresponding path program 1 times [2019-11-07 03:53:51,327 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:51,328 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384438601] [2019-11-07 03:53:51,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 03:53:51,747 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384438601] [2019-11-07 03:53:51,747 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559666417] [2019-11-07 03:53:51,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:53:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:52,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 2121 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-07 03:53:52,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:53:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 03:53:52,593 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:53:52,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:53:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 03:53:53,121 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 03:53:53,122 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6] total 12 [2019-11-07 03:53:53,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092075767] [2019-11-07 03:53:53,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 03:53:53,123 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:53,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 03:53:53,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-11-07 03:53:53,124 INFO L87 Difference]: Start difference. First operand 557 states and 652 transitions. Second operand 8 states. [2019-11-07 03:53:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:54,535 INFO L93 Difference]: Finished difference Result 1402 states and 1644 transitions. [2019-11-07 03:53:54,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 03:53:54,536 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 250 [2019-11-07 03:53:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:54,545 INFO L225 Difference]: With dead ends: 1402 [2019-11-07 03:53:54,545 INFO L226 Difference]: Without dead ends: 1386 [2019-11-07 03:53:54,547 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-11-07 03:53:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2019-11-07 03:53:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1358. [2019-11-07 03:53:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2019-11-07 03:53:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1597 transitions. [2019-11-07 03:53:54,630 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1597 transitions. Word has length 250 [2019-11-07 03:53:54,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:54,631 INFO L462 AbstractCegarLoop]: Abstraction has 1358 states and 1597 transitions. [2019-11-07 03:53:54,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 03:53:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1597 transitions. [2019-11-07 03:53:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-11-07 03:53:54,636 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:54,637 INFO L410 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] [2019-11-07 03:53:54,843 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:53:54,843 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1819485890, now seen corresponding path program 1 times [2019-11-07 03:53:54,844 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:54,844 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416514332] [2019-11-07 03:53:54,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:55,724 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:274) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:210) 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:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:83) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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) [2019-11-07 03:53:55,733 INFO L168 Benchmark]: Toolchain (without parser) took 13827.52 ms. Allocated memory was 137.4 MB in the beginning and 540.5 MB in the end (delta: 403.2 MB). Free memory was 96.4 MB in the beginning and 460.6 MB in the end (delta: -364.2 MB). Peak memory consumption was 39.0 MB. Max. memory is 7.1 GB. [2019-11-07 03:53:55,734 INFO L168 Benchmark]: CDTParser took 1.38 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-07 03:53:55,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1867.70 ms. Allocated memory was 137.4 MB in the beginning and 205.0 MB in the end (delta: 67.6 MB). Free memory was 96.2 MB in the beginning and 116.4 MB in the end (delta: -20.2 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2019-11-07 03:53:55,738 INFO L168 Benchmark]: Boogie Preprocessor took 202.70 ms. Allocated memory is still 205.0 MB. Free memory was 116.4 MB in the beginning and 107.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2019-11-07 03:53:55,739 INFO L168 Benchmark]: RCFGBuilder took 2223.24 ms. Allocated memory was 205.0 MB in the beginning and 258.5 MB in the end (delta: 53.5 MB). Free memory was 107.6 MB in the beginning and 129.4 MB in the end (delta: -21.8 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2019-11-07 03:53:55,741 INFO L168 Benchmark]: TraceAbstraction took 9514.79 ms. Allocated memory was 258.5 MB in the beginning and 540.5 MB in the end (delta: 282.1 MB). Free memory was 129.4 MB in the beginning and 460.6 MB in the end (delta: -331.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-07 03:53:55,748 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.38 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1867.70 ms. Allocated memory was 137.4 MB in the beginning and 205.0 MB in the end (delta: 67.6 MB). Free memory was 96.2 MB in the beginning and 116.4 MB in the end (delta: -20.2 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 202.70 ms. Allocated memory is still 205.0 MB. Free memory was 116.4 MB in the beginning and 107.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2223.24 ms. Allocated memory was 205.0 MB in the beginning and 258.5 MB in the end (delta: 53.5 MB). Free memory was 107.6 MB in the beginning and 129.4 MB in the end (delta: -21.8 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9514.79 ms. Allocated memory was 258.5 MB in the beginning and 540.5 MB in the end (delta: 282.1 MB). Free memory was 129.4 MB in the beginning and 460.6 MB in the end (delta: -331.2 MB). There was no memory consumed. 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...