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-f4eb214f-m [2019-10-13 22:55:16,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:55:16,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:55:16,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:55:16,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:55:16,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:55:16,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:55:16,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:55:16,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:55:16,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:55:16,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:55:16,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:55:16,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:55:16,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:55:16,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:55:16,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:55:16,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:55:16,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:55:16,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:55:16,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:55:16,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:55:16,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:55:16,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:55:16,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:55:16,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:55:16,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:55:16,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:55:16,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:55:16,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:55:16,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:55:16,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:55:16,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:55:16,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:55:16,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:55:16,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:55:16,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:55:16,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:55:16,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:55:16,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:55:16,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:55:16,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:55:16,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 22:55:16,510 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:55:16,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:55:16,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:55:16,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:55:16,514 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:55:16,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:55:16,514 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:55:16,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:55:16,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:55:16,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:55:16,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:55:16,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:55:16,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:55:16,517 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:55:16,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:55:16,517 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:55:16,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:55:16,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:55:16,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:55:16,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:55:16,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:55:16,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:55:16,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:55:16,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:55:16,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:55:16,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:55:16,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:55:16,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:55:16,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:55:16,793 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:55:16,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:55:16,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:55:16,811 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:55:16,811 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:55:16,812 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 22:55:16,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a21f496b1/5ab46b95e87e4a01bdcde5a924218e8b/FLAG2a5e8e279 [2019-10-13 22:55:17,612 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:55:17,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 22:55:17,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a21f496b1/5ab46b95e87e4a01bdcde5a924218e8b/FLAG2a5e8e279 [2019-10-13 22:55:17,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a21f496b1/5ab46b95e87e4a01bdcde5a924218e8b [2019-10-13 22:55:17,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:55:17,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:55:17,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:55:17,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:55:17,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:55:17,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:55:17" (1/1) ... [2019-10-13 22:55:17,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6912290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:17, skipping insertion in model container [2019-10-13 22:55:17,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:55:17" (1/1) ... [2019-10-13 22:55:17,744 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:55:17,867 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:55:18,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:55:18,986 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:55:19,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:55:19,320 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:55:19,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:19 WrapperNode [2019-10-13 22:55:19,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:55:19,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:55:19,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:55:19,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:55:19,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:19" (1/1) ... [2019-10-13 22:55:19,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:19" (1/1) ... [2019-10-13 22:55:19,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:19" (1/1) ... [2019-10-13 22:55:19,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:19" (1/1) ... [2019-10-13 22:55:19,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:19" (1/1) ... [2019-10-13 22:55:19,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:19" (1/1) ... [2019-10-13 22:55:19,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:19" (1/1) ... [2019-10-13 22:55:19,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:55:19,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:55:19,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:55:19,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:55:19,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:55:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:55:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:55:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-10-13 22:55:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-13 22:55:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-10-13 22:55:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-10-13 22:55:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2019-10-13 22:55:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-13 22:55:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-13 22:55:19,639 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2019-10-13 22:55:19,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:55:19,640 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:55:19,641 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 22:55:19,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:55:19,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 22:55:19,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-13 22:55:19,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-13 22:55:19,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 22:55:19,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 22:55:19,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 22:55:19,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 22:55:19,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 22:55:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2019-10-13 22:55:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2019-10-13 22:55:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2019-10-13 22:55:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2019-10-13 22:55:19,648 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2019-10-13 22:55:19,648 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2019-10-13 22:55:19,648 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2019-10-13 22:55:19,649 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_irq [2019-10-13 22:55:19,649 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_open [2019-10-13 22:55:19,649 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_close [2019-10-13 22:55:19,649 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_probe [2019-10-13 22:55:19,649 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_disconnect [2019-10-13 22:55:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_init [2019-10-13 22:55:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_exit [2019-10-13 22:55:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-10-13 22:55:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:55:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-13 22:55:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-10-13 22:55:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2019-10-13 22:55:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2019-10-13 22:55:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_5 [2019-10-13 22:55:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_6 [2019-10-13 22:55:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_7 [2019-10-13 22:55:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_8 [2019-10-13 22:55:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_10 [2019-10-13 22:55:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-10-13 22:55:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:55:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2019-10-13 22:55:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2019-10-13 22:55:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2019-10-13 22:55:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2019-10-13 22:55:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2019-10-13 22:55:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2019-10-13 22:55:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2019-10-13 22:55:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-10-13 22:55:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2019-10-13 22:55:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2019-10-13 22:55:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2019-10-13 22:55:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2019-10-13 22:55:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2019-10-13 22:55:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2019-10-13 22:55:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2019-10-13 22:55:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:55:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-13 22:55:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-13 22:55:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2019-10-13 22:55:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2019-10-13 22:55:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2019-10-13 22:55:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2019-10-13 22:55:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2019-10-13 22:55:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:55:19,658 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:55:19,658 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2019-10-13 22:55:19,658 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2019-10-13 22:55:19,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-10-13 22:55:19,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-13 22:55:19,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 22:55:19,660 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-10-13 22:55:19,660 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-13 22:55:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-13 22:55:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 22:55:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-13 22:55:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:55:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:55:19,662 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 22:55:19,662 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 22:55:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:55:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 22:55:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-13 22:55:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:55:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-10-13 22:55:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-10-13 22:55:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-13 22:55:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-13 22:55:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:55:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 22:55:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-13 22:55:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2019-10-13 22:55:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2019-10-13 22:55:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-13 22:55:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-13 22:55:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_8 [2019-10-13 22:55:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_7 [2019-10-13 22:55:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-13 22:55:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2019-10-13 22:55:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:55:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:55:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 22:55:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-10-13 22:55:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-13 22:55:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 22:55:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-10-13 22:55:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_6 [2019-10-13 22:55:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-13 22:55:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_5 [2019-10-13 22:55:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-13 22:55:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_10 [2019-10-13 22:55:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2019-10-13 22:55:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2019-10-13 22:55:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-13 22:55:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-10-13 22:55:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-10-13 22:55:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-13 22:55:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2019-10-13 22:55:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2019-10-13 22:55:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2019-10-13 22:55:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2019-10-13 22:55:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-10-13 22:55:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2019-10-13 22:55:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2019-10-13 22:55:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2019-10-13 22:55:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:55:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:55:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:55:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:55:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 22:55:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:55:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:55:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:55:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:55:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:55:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:55:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:55:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 22:55:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 22:55:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-13 22:55:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-13 22:55:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 22:55:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 22:55:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 22:55:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 22:55:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 22:55:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-10-13 22:55:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2019-10-13 22:55:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2019-10-13 22:55:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2019-10-13 22:55:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2019-10-13 22:55:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2019-10-13 22:55:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2019-10-13 22:55:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2019-10-13 22:55:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2019-10-13 22:55:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2019-10-13 22:55:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2019-10-13 22:55:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2019-10-13 22:55:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2019-10-13 22:55:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:55:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_irq [2019-10-13 22:55:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_open [2019-10-13 22:55:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:55:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_close [2019-10-13 22:55:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_probe [2019-10-13 22:55:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_disconnect [2019-10-13 22:55:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_init [2019-10-13 22:55:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_exit [2019-10-13 22:55:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:55:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:55:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:55:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:55:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2019-10-13 22:55:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2019-10-13 22:55:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-10-13 22:55:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2019-10-13 22:55:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2019-10-13 22:55:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2019-10-13 22:55:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2019-10-13 22:55:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2019-10-13 22:55:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2019-10-13 22:55:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:55:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:55:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:55:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:55:19,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:55:19,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:55:19,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:55:20,382 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 22:55:22,042 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:55:22,042 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:55:22,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:22 BoogieIcfgContainer [2019-10-13 22:55:22,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:55:22,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:55:22,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:55:22,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:55:22,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:55:17" (1/3) ... [2019-10-13 22:55:22,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c9b02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:22, skipping insertion in model container [2019-10-13 22:55:22,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:19" (2/3) ... [2019-10-13 22:55:22,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c9b02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:22, skipping insertion in model container [2019-10-13 22:55:22,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:22" (3/3) ... [2019-10-13 22:55:22,053 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 22:55:22,062 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:55:22,071 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:55:22,081 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:55:22,106 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:55:22,107 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:55:22,107 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:55:22,107 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:55:22,107 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:55:22,107 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:55:22,107 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:55:22,107 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:55:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2019-10-13 22:55:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 22:55:22,143 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:22,144 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:22,145 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:22,151 INFO L82 PathProgramCache]: Analyzing trace with hash 40251044, now seen corresponding path program 1 times [2019-10-13 22:55:22,160 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:22,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29748403] [2019-10-13 22:55:22,161 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:22,161 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:22,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:55:22,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29748403] [2019-10-13 22:55:22,636 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:22,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:22,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983990548] [2019-10-13 22:55:22,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:22,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:22,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:22,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:22,658 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 3 states. [2019-10-13 22:55:22,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:22,827 INFO L93 Difference]: Finished difference Result 879 states and 1042 transitions. [2019-10-13 22:55:22,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:22,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-10-13 22:55:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:22,854 INFO L225 Difference]: With dead ends: 879 [2019-10-13 22:55:22,855 INFO L226 Difference]: Without dead ends: 556 [2019-10-13 22:55:22,868 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2019-10-13 22:55:23,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2019-10-13 22:55:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-13 22:55:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 646 transitions. [2019-10-13 22:55:23,071 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 646 transitions. Word has length 38 [2019-10-13 22:55:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:23,071 INFO L462 AbstractCegarLoop]: Abstraction has 556 states and 646 transitions. [2019-10-13 22:55:23,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:23,073 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 646 transitions. [2019-10-13 22:55:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 22:55:23,082 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:23,083 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:23,083 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:23,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1444432789, now seen corresponding path program 1 times [2019-10-13 22:55:23,084 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:23,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244788736] [2019-10-13 22:55:23,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:23,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:23,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 22:55:23,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244788736] [2019-10-13 22:55:23,347 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:23,347 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:23,348 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696832514] [2019-10-13 22:55:23,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:23,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:23,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:23,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:23,363 INFO L87 Difference]: Start difference. First operand 556 states and 646 transitions. Second operand 3 states. [2019-10-13 22:55:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:23,448 INFO L93 Difference]: Finished difference Result 939 states and 1088 transitions. [2019-10-13 22:55:23,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:23,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-10-13 22:55:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:23,468 INFO L225 Difference]: With dead ends: 939 [2019-10-13 22:55:23,468 INFO L226 Difference]: Without dead ends: 936 [2019-10-13 22:55:23,469 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:23,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2019-10-13 22:55:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 928. [2019-10-13 22:55:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2019-10-13 22:55:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1076 transitions. [2019-10-13 22:55:23,566 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1076 transitions. Word has length 57 [2019-10-13 22:55:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:23,569 INFO L462 AbstractCegarLoop]: Abstraction has 928 states and 1076 transitions. [2019-10-13 22:55:23,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1076 transitions. [2019-10-13 22:55:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 22:55:23,573 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:23,574 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:23,574 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:23,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1827601028, now seen corresponding path program 1 times [2019-10-13 22:55:23,576 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:23,576 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688630072] [2019-10-13 22:55:23,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:23,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:23,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 22:55:23,739 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688630072] [2019-10-13 22:55:23,740 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:23,740 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:23,740 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545787932] [2019-10-13 22:55:23,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:23,741 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:23,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:23,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:23,742 INFO L87 Difference]: Start difference. First operand 928 states and 1076 transitions. Second operand 3 states. [2019-10-13 22:55:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:23,792 INFO L93 Difference]: Finished difference Result 930 states and 1077 transitions. [2019-10-13 22:55:23,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:23,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-10-13 22:55:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:23,800 INFO L225 Difference]: With dead ends: 930 [2019-10-13 22:55:23,800 INFO L226 Difference]: Without dead ends: 927 [2019-10-13 22:55:23,801 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2019-10-13 22:55:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2019-10-13 22:55:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2019-10-13 22:55:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1074 transitions. [2019-10-13 22:55:23,883 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1074 transitions. Word has length 58 [2019-10-13 22:55:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:23,885 INFO L462 AbstractCegarLoop]: Abstraction has 927 states and 1074 transitions. [2019-10-13 22:55:23,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1074 transitions. [2019-10-13 22:55:23,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 22:55:23,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:23,896 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:23,896 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:23,897 INFO L82 PathProgramCache]: Analyzing trace with hash 820919416, now seen corresponding path program 1 times [2019-10-13 22:55:23,897 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:23,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261387577] [2019-10-13 22:55:23,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:23,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:23,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 22:55:24,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261387577] [2019-10-13 22:55:24,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:24,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:24,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375101523] [2019-10-13 22:55:24,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:24,045 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:24,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:24,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:24,045 INFO L87 Difference]: Start difference. First operand 927 states and 1074 transitions. Second operand 3 states. [2019-10-13 22:55:24,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:24,151 INFO L93 Difference]: Finished difference Result 929 states and 1075 transitions. [2019-10-13 22:55:24,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:24,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-10-13 22:55:24,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:24,156 INFO L225 Difference]: With dead ends: 929 [2019-10-13 22:55:24,156 INFO L226 Difference]: Without dead ends: 926 [2019-10-13 22:55:24,157 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:24,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2019-10-13 22:55:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2019-10-13 22:55:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2019-10-13 22:55:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1072 transitions. [2019-10-13 22:55:24,206 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1072 transitions. Word has length 59 [2019-10-13 22:55:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:24,207 INFO L462 AbstractCegarLoop]: Abstraction has 926 states and 1072 transitions. [2019-10-13 22:55:24,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1072 transitions. [2019-10-13 22:55:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 22:55:24,209 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:24,209 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:24,209 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:24,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:24,209 INFO L82 PathProgramCache]: Analyzing trace with hash -321434617, now seen corresponding path program 1 times [2019-10-13 22:55:24,210 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:24,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038104260] [2019-10-13 22:55:24,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:24,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:24,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 22:55:24,321 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038104260] [2019-10-13 22:55:24,321 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:24,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:24,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412135530] [2019-10-13 22:55:24,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:24,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:24,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:24,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:24,323 INFO L87 Difference]: Start difference. First operand 926 states and 1072 transitions. Second operand 3 states. [2019-10-13 22:55:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:24,367 INFO L93 Difference]: Finished difference Result 928 states and 1073 transitions. [2019-10-13 22:55:24,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:24,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-10-13 22:55:24,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:24,372 INFO L225 Difference]: With dead ends: 928 [2019-10-13 22:55:24,372 INFO L226 Difference]: Without dead ends: 909 [2019-10-13 22:55:24,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2019-10-13 22:55:24,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2019-10-13 22:55:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2019-10-13 22:55:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1052 transitions. [2019-10-13 22:55:24,437 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1052 transitions. Word has length 60 [2019-10-13 22:55:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:24,439 INFO L462 AbstractCegarLoop]: Abstraction has 909 states and 1052 transitions. [2019-10-13 22:55:24,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1052 transitions. [2019-10-13 22:55:24,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 22:55:24,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:24,451 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:24,451 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:24,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:24,454 INFO L82 PathProgramCache]: Analyzing trace with hash 198805745, now seen corresponding path program 1 times [2019-10-13 22:55:24,454 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:24,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094204071] [2019-10-13 22:55:24,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:24,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:24,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 22:55:24,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094204071] [2019-10-13 22:55:24,611 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:24,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:55:24,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889805368] [2019-10-13 22:55:24,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:55:24,612 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:24,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:55:24,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:24,613 INFO L87 Difference]: Start difference. First operand 909 states and 1052 transitions. Second operand 3 states. [2019-10-13 22:55:24,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:24,676 INFO L93 Difference]: Finished difference Result 1463 states and 1707 transitions. [2019-10-13 22:55:24,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:55:24,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2019-10-13 22:55:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:24,681 INFO L225 Difference]: With dead ends: 1463 [2019-10-13 22:55:24,681 INFO L226 Difference]: Without dead ends: 571 [2019-10-13 22:55:24,683 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:55:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-10-13 22:55:24,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 539. [2019-10-13 22:55:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-13 22:55:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 630 transitions. [2019-10-13 22:55:24,718 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 630 transitions. Word has length 185 [2019-10-13 22:55:24,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:24,718 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 630 transitions. [2019-10-13 22:55:24,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:55:24,719 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 630 transitions. [2019-10-13 22:55:24,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 22:55:24,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:24,723 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:24,723 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:24,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:24,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2141459039, now seen corresponding path program 1 times [2019-10-13 22:55:24,724 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:24,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104177730] [2019-10-13 22:55:24,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:24,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:24,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 22:55:24,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104177730] [2019-10-13 22:55:24,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:24,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 22:55:24,973 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482483471] [2019-10-13 22:55:24,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:55:24,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:24,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:55:24,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:55:24,974 INFO L87 Difference]: Start difference. First operand 539 states and 630 transitions. Second operand 6 states. [2019-10-13 22:55:25,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:25,065 INFO L93 Difference]: Finished difference Result 1060 states and 1243 transitions. [2019-10-13 22:55:25,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 22:55:25,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2019-10-13 22:55:25,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:25,071 INFO L225 Difference]: With dead ends: 1060 [2019-10-13 22:55:25,071 INFO L226 Difference]: Without dead ends: 551 [2019-10-13 22:55:25,073 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 22:55:25,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2019-10-13 22:55:25,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2019-10-13 22:55:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-10-13 22:55:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 640 transitions. [2019-10-13 22:55:25,109 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 640 transitions. Word has length 202 [2019-10-13 22:55:25,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:25,111 INFO L462 AbstractCegarLoop]: Abstraction has 549 states and 640 transitions. [2019-10-13 22:55:25,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:55:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 640 transitions. [2019-10-13 22:55:25,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-13 22:55:25,115 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:25,116 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:25,116 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:25,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:25,117 INFO L82 PathProgramCache]: Analyzing trace with hash -539006450, now seen corresponding path program 1 times [2019-10-13 22:55:25,117 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:25,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812921164] [2019-10-13 22:55:25,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:25,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:25,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 22:55:25,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812921164] [2019-10-13 22:55:25,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:25,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 22:55:25,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017725600] [2019-10-13 22:55:25,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 22:55:25,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:25,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 22:55:25,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 22:55:25,756 INFO L87 Difference]: Start difference. First operand 549 states and 640 transitions. Second operand 9 states. [2019-10-13 22:55:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:27,160 INFO L93 Difference]: Finished difference Result 789 states and 923 transitions. [2019-10-13 22:55:27,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 22:55:27,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2019-10-13 22:55:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:27,165 INFO L225 Difference]: With dead ends: 789 [2019-10-13 22:55:27,165 INFO L226 Difference]: Without dead ends: 773 [2019-10-13 22:55:27,166 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-10-13 22:55:27,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-10-13 22:55:27,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 557. [2019-10-13 22:55:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2019-10-13 22:55:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 652 transitions. [2019-10-13 22:55:27,205 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 652 transitions. Word has length 206 [2019-10-13 22:55:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:27,205 INFO L462 AbstractCegarLoop]: Abstraction has 557 states and 652 transitions. [2019-10-13 22:55:27,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 22:55:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 652 transitions. [2019-10-13 22:55:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-13 22:55:27,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:27,210 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:27,211 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:27,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:27,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1888293338, now seen corresponding path program 1 times [2019-10-13 22:55:27,212 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:27,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371348724] [2019-10-13 22:55:27,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:27,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:27,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 22:55:27,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371348724] [2019-10-13 22:55:27,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829292465] [2019-10-13 22:55:27,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:28,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 2121 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 22:55:28,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 22:55:28,528 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:55:28,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:55:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 22:55:29,109 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 22:55:29,109 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6] total 12 [2019-10-13 22:55:29,110 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183419840] [2019-10-13 22:55:29,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 22:55:29,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:29,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 22:55:29,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-13 22:55:29,113 INFO L87 Difference]: Start difference. First operand 557 states and 652 transitions. Second operand 8 states. [2019-10-13 22:55:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:30,725 INFO L93 Difference]: Finished difference Result 1402 states and 1644 transitions. [2019-10-13 22:55:30,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 22:55:30,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 250 [2019-10-13 22:55:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:30,734 INFO L225 Difference]: With dead ends: 1402 [2019-10-13 22:55:30,734 INFO L226 Difference]: Without dead ends: 1386 [2019-10-13 22:55:30,736 INFO L600 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 [2019-10-13 22:55:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2019-10-13 22:55:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1358. [2019-10-13 22:55:30,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2019-10-13 22:55:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1597 transitions. [2019-10-13 22:55:30,843 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1597 transitions. Word has length 250 [2019-10-13 22:55:30,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:30,847 INFO L462 AbstractCegarLoop]: Abstraction has 1358 states and 1597 transitions. [2019-10-13 22:55:30,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 22:55:30,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1597 transitions. [2019-10-13 22:55:30,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-13 22:55:30,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:30,853 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:31,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:31,071 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:31,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1819485890, now seen corresponding path program 1 times [2019-10-13 22:55:31,072 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:31,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657512949] [2019-10-13 22:55:31,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:31,073 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:31,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:32,127 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.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-13 22:55:32,135 INFO L168 Benchmark]: Toolchain (without parser) took 14407.66 ms. Allocated memory was 138.9 MB in the beginning and 525.3 MB in the end (delta: 386.4 MB). Free memory was 98.5 MB in the beginning and 417.6 MB in the end (delta: -319.1 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2019-10-13 22:55:32,136 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 22:55:32,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1595.18 ms. Allocated memory was 138.9 MB in the beginning and 207.1 MB in the end (delta: 68.2 MB). Free memory was 98.3 MB in the beginning and 120.3 MB in the end (delta: -22.0 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2019-10-13 22:55:32,137 INFO L168 Benchmark]: Boogie Preprocessor took 204.22 ms. Allocated memory is still 207.1 MB. Free memory was 120.3 MB in the beginning and 112.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 7.1 GB. [2019-10-13 22:55:32,138 INFO L168 Benchmark]: RCFGBuilder took 2516.53 ms. Allocated memory was 207.1 MB in the beginning and 260.0 MB in the end (delta: 53.0 MB). Free memory was 112.2 MB in the beginning and 133.1 MB in the end (delta: -20.9 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:55:32,139 INFO L168 Benchmark]: TraceAbstraction took 10086.62 ms. Allocated memory was 260.0 MB in the beginning and 525.3 MB in the end (delta: 265.3 MB). Free memory was 131.2 MB in the beginning and 417.6 MB in the end (delta: -286.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 22:55:32,143 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1595.18 ms. Allocated memory was 138.9 MB in the beginning and 207.1 MB in the end (delta: 68.2 MB). Free memory was 98.3 MB in the beginning and 120.3 MB in the end (delta: -22.0 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 204.22 ms. Allocated memory is still 207.1 MB. Free memory was 120.3 MB in the beginning and 112.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2516.53 ms. Allocated memory was 207.1 MB in the beginning and 260.0 MB in the end (delta: 53.0 MB). Free memory was 112.2 MB in the beginning and 133.1 MB in the end (delta: -20.9 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10086.62 ms. Allocated memory was 260.0 MB in the beginning and 525.3 MB in the end (delta: 265.3 MB). Free memory was 131.2 MB in the beginning and 417.6 MB in the end (delta: -286.4 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...