/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:52:20,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:52:20,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:52:20,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:52:20,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:52:20,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:52:20,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:52:20,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:52:20,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:52:20,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:52:20,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:52:20,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:52:20,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:52:20,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:52:20,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:52:20,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:52:20,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:52:20,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:52:20,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:52:20,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:52:20,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:52:20,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:52:20,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:52:20,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:52:20,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 03:52:20,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 03:52:20,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 03:52:20,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 03:52:20,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 03:52:20,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 03:52:20,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 03:52:20,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 03:52:20,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 03:52:20,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 03:52:20,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 03:52:20,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 03:52:20,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 03:52:20,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 03:52:20,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:52:20,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:52:20,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:52:20,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 03:52:20,390 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:52:20,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:52:20,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:52:20,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:52:20,392 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:52:20,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:52:20,393 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:52:20,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:52:20,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:52:20,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:52:20,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:52:20,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:52:20,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:52:20,394 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:52:20,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:52:20,394 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:52:20,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:52:20,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:52:20,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:52:20,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:52:20,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:52:20,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:52:20,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:52:20,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:52:20,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:52:20,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:52:20,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:52:20,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:52:20,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 03:52:20,681 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:52:20,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:52:20,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:52:20,698 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:52:20,699 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:52:20,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-11-07 03:52:20,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9079cb018/17237f6222474fc4bcf8cc6084eee17a/FLAG976c31111 [2019-11-07 03:52:21,452 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:52:21,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-11-07 03:52:21,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9079cb018/17237f6222474fc4bcf8cc6084eee17a/FLAG976c31111 [2019-11-07 03:52:21,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9079cb018/17237f6222474fc4bcf8cc6084eee17a [2019-11-07 03:52:21,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:52:21,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:52:21,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:52:21,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:52:21,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:52:21,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:52:21" (1/1) ... [2019-11-07 03:52:21,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745efcad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:21, skipping insertion in model container [2019-11-07 03:52:21,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:52:21" (1/1) ... [2019-11-07 03:52:21,622 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:52:21,727 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:52:22,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:52:22,983 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:52:23,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:52:23,330 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:52:23,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:23 WrapperNode [2019-11-07 03:52:23,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:52:23,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:52:23,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:52:23,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:52:23,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:23" (1/1) ... [2019-11-07 03:52:23,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:23" (1/1) ... [2019-11-07 03:52:23,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:23" (1/1) ... [2019-11-07 03:52:23,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:23" (1/1) ... [2019-11-07 03:52:23,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:23" (1/1) ... [2019-11-07 03:52:23,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:23" (1/1) ... [2019-11-07 03:52:23,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:23" (1/1) ... [2019-11-07 03:52:23,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:52:23,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:52:23,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:52:23,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:52:23,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:52:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:52:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:52:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 03:52:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 03:52:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 03:52:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 03:52:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 03:52:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 03:52:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 03:52:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-11-07 03:52:23,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 03:52:23,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-07 03:52:23,656 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-07 03:52:23,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 03:52:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 03:52:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kzalloc_1 [2019-11-07 03:52:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-11-07 03:52:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-11-07 03:52:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2019-11-07 03:52:23,658 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2019-11-07 03:52:23,658 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2019-11-07 03:52:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-11-07 03:52:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2019-11-07 03:52:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2019-11-07 03:52:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure qcprobe [2019-11-07 03:52:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure qc_release [2019-11-07 03:52:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure qcinit [2019-11-07 03:52:23,660 INFO L138 BoogieDeclarations]: Found implementation of procedure qcexit [2019-11-07 03:52:23,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-11-07 03:52:23,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-11-07 03:52:23,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:52:23,660 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-07 03:52:23,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-11-07 03:52:23,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_3 [2019-11-07 03:52:23,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_4 [2019-11-07 03:52:23,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_5 [2019-11-07 03:52:23,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_6 [2019-11-07 03:52:23,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_7 [2019-11-07 03:52:23,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_8 [2019-11-07 03:52:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_9 [2019-11-07 03:52:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_10 [2019-11-07 03:52:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_11 [2019-11-07 03:52:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_12 [2019-11-07 03:52:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2019-11-07 03:52:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc [2019-11-07 03:52:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2019-11-07 03:52:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 03:52:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-07 03:52:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-11-07 03:52:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 03:52:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_2 [2019-11-07 03:52:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 03:52:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-11-07 03:52:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_enable_autosuspend [2019-11-07 03:52:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-11-07 03:52:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-11-07 03:52:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-11-07 03:52:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-11-07 03:52:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-11-07 03:52:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2019-11-07 03:52:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2019-11-07 03:52:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2019-11-07 03:52:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2019-11-07 03:52:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2019-11-07 03:52:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2019-11-07 03:52:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2019-11-07 03:52:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_release [2019-11-07 03:52:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2019-11-07 03:52:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_startup [2019-11-07 03:52:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2019-11-07 03:52:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2019-11-07 03:52:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2019-11-07 03:52:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 03:52:23,668 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 03:52:23,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-07 03:52:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 03:52:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:52:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 03:52:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 03:52:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 03:52:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 03:52:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-07 03:52:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:52:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 03:52:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 03:52:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 03:52:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 03:52:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 03:52:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 03:52:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 03:52:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 03:52:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 03:52:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 03:52:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 03:52:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 03:52:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-11-07 03:52:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-07 03:52:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc [2019-11-07 03:52:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2019-11-07 03:52:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-07 03:52:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-07 03:52:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 03:52:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_4 [2019-11-07 03:52:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_6 [2019-11-07 03:52:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_8 [2019-11-07 03:52:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_10 [2019-11-07 03:52:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_11 [2019-11-07 03:52:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_12 [2019-11-07 03:52:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 03:52:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 03:52:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kzalloc_1 [2019-11-07 03:52:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-07 03:52:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-11-07 03:52:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-11-07 03:52:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-11-07 03:52:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-11-07 03:52:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:52:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-11-07 03:52:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2019-11-07 03:52:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2019-11-07 03:52:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2019-11-07 03:52:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_enable_autosuspend [2019-11-07 03:52:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-11-07 03:52:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-11-07 03:52:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-11-07 03:52:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:52:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-11-07 03:52:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2019-11-07 03:52:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2019-11-07 03:52:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_3 [2019-11-07 03:52:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_5 [2019-11-07 03:52:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_7 [2019-11-07 03:52:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_9 [2019-11-07 03:52:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2019-11-07 03:52:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:52:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2019-11-07 03:52:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:52:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-11-07 03:52:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-11-07 03:52:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-11-07 03:52:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-11-07 03:52:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2019-11-07 03:52:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2019-11-07 03:52:23,688 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2019-11-07 03:52:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2019-11-07 03:52:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_startup [2019-11-07 03:52:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2019-11-07 03:52:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_release [2019-11-07 03:52:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2019-11-07 03:52:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2019-11-07 03:52:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2019-11-07 03:52:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2019-11-07 03:52:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2019-11-07 03:52:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure qcprobe [2019-11-07 03:52:23,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:52:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure qc_release [2019-11-07 03:52:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure qcinit [2019-11-07 03:52:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure qcexit [2019-11-07 03:52:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_2 [2019-11-07 03:52:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 03:52:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 03:52:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:52:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-07 03:52:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 03:52:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 03:52:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:52:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 03:52:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 03:52:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:52:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:52:24,821 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 03:52:26,715 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:52:26,715 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 03:52:26,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:52:26 BoogieIcfgContainer [2019-11-07 03:52:26,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:52:26,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:52:26,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:52:26,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:52:26,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:52:21" (1/3) ... [2019-11-07 03:52:26,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c93a966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:52:26, skipping insertion in model container [2019-11-07 03:52:26,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:23" (2/3) ... [2019-11-07 03:52:26,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c93a966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:52:26, skipping insertion in model container [2019-11-07 03:52:26,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:52:26" (3/3) ... [2019-11-07 03:52:26,726 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-11-07 03:52:26,737 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:52:26,750 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:52:26,762 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:52:26,807 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:52:26,807 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:52:26,808 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:52:26,808 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:52:26,808 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:52:26,808 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:52:26,808 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:52:26,808 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:52:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states. [2019-11-07 03:52:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 03:52:26,876 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:52:26,878 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:52:26,880 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:52:26,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:52:26,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1560546538, now seen corresponding path program 1 times [2019-11-07 03:52:26,899 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:52:26,899 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746922149] [2019-11-07 03:52:26,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:52:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:52:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 03:52:27,686 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746922149] [2019-11-07 03:52:27,689 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:52:27,689 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:52:27,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583241647] [2019-11-07 03:52:27,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:52:27,696 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:52:27,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:52:27,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:52:27,713 INFO L87 Difference]: Start difference. First operand 457 states. Second operand 3 states. [2019-11-07 03:52:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:52:27,884 INFO L93 Difference]: Finished difference Result 870 states and 1155 transitions. [2019-11-07 03:52:27,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:52:27,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-11-07 03:52:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:52:27,914 INFO L225 Difference]: With dead ends: 870 [2019-11-07 03:52:27,915 INFO L226 Difference]: Without dead ends: 828 [2019-11-07 03:52:27,923 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:52:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2019-11-07 03:52:28,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 799. [2019-11-07 03:52:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2019-11-07 03:52:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1049 transitions. [2019-11-07 03:52:28,086 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1049 transitions. Word has length 58 [2019-11-07 03:52:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:52:28,087 INFO L462 AbstractCegarLoop]: Abstraction has 799 states and 1049 transitions. [2019-11-07 03:52:28,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:52:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1049 transitions. [2019-11-07 03:52:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 03:52:28,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:52:28,097 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-11-07 03:52:28,097 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:52:28,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:52:28,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1135876153, now seen corresponding path program 1 times [2019-11-07 03:52:28,098 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:52:28,098 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345698794] [2019-11-07 03:52:28,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:52:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:52:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 03:52:28,340 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345698794] [2019-11-07 03:52:28,341 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:52:28,341 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:52:28,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866443313] [2019-11-07 03:52:28,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:52:28,343 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:52:28,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:52:28,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:52:28,344 INFO L87 Difference]: Start difference. First operand 799 states and 1049 transitions. Second operand 3 states. [2019-11-07 03:52:28,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:52:28,691 INFO L93 Difference]: Finished difference Result 1780 states and 2327 transitions. [2019-11-07 03:52:28,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:52:28,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2019-11-07 03:52:28,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:52:28,700 INFO L225 Difference]: With dead ends: 1780 [2019-11-07 03:52:28,700 INFO L226 Difference]: Without dead ends: 1002 [2019-11-07 03:52:28,707 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:52:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2019-11-07 03:52:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 996. [2019-11-07 03:52:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2019-11-07 03:52:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1297 transitions. [2019-11-07 03:52:28,814 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1297 transitions. Word has length 95 [2019-11-07 03:52:28,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:52:28,815 INFO L462 AbstractCegarLoop]: Abstraction has 996 states and 1297 transitions. [2019-11-07 03:52:28,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:52:28,815 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1297 transitions. [2019-11-07 03:52:28,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 03:52:28,826 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:52:28,829 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 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] [2019-11-07 03:52:28,830 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:52:28,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:52:28,830 INFO L82 PathProgramCache]: Analyzing trace with hash -64700418, now seen corresponding path program 1 times [2019-11-07 03:52:28,831 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:52:28,831 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019247447] [2019-11-07 03:52:28,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:52:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:52:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-11-07 03:52:29,288 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019247447] [2019-11-07 03:52:29,288 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:52:29,288 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:52:29,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397820539] [2019-11-07 03:52:29,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:52:29,290 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:52:29,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:52:29,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:52:29,290 INFO L87 Difference]: Start difference. First operand 996 states and 1297 transitions. Second operand 3 states. [2019-11-07 03:52:29,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:52:29,482 INFO L93 Difference]: Finished difference Result 1895 states and 2493 transitions. [2019-11-07 03:52:29,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:52:29,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2019-11-07 03:52:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:52:29,492 INFO L225 Difference]: With dead ends: 1895 [2019-11-07 03:52:29,493 INFO L226 Difference]: Without dead ends: 870 [2019-11-07 03:52:29,496 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:52:29,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-11-07 03:52:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 857. [2019-11-07 03:52:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2019-11-07 03:52:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1132 transitions. [2019-11-07 03:52:29,546 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1132 transitions. Word has length 135 [2019-11-07 03:52:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:52:29,548 INFO L462 AbstractCegarLoop]: Abstraction has 857 states and 1132 transitions. [2019-11-07 03:52:29,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:52:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1132 transitions. [2019-11-07 03:52:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-11-07 03:52:29,554 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:52:29,555 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 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] [2019-11-07 03:52:29,555 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:52:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:52:29,555 INFO L82 PathProgramCache]: Analyzing trace with hash -716007649, now seen corresponding path program 1 times [2019-11-07 03:52:29,556 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:52:29,556 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429781344] [2019-11-07 03:52:29,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:52:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:52:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-07 03:52:29,817 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429781344] [2019-11-07 03:52:29,818 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:52:29,818 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 03:52:29,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37993510] [2019-11-07 03:52:29,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 03:52:29,819 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:52:29,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 03:52:29,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 03:52:29,820 INFO L87 Difference]: Start difference. First operand 857 states and 1132 transitions. Second operand 4 states. [2019-11-07 03:52:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:52:29,889 INFO L93 Difference]: Finished difference Result 1701 states and 2249 transitions. [2019-11-07 03:52:29,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 03:52:29,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-11-07 03:52:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:52:29,895 INFO L225 Difference]: With dead ends: 1701 [2019-11-07 03:52:29,895 INFO L226 Difference]: Without dead ends: 858 [2019-11-07 03:52:29,898 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 03:52:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2019-11-07 03:52:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2019-11-07 03:52:29,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2019-11-07 03:52:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1133 transitions. [2019-11-07 03:52:30,003 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1133 transitions. Word has length 137 [2019-11-07 03:52:30,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:52:30,003 INFO L462 AbstractCegarLoop]: Abstraction has 858 states and 1133 transitions. [2019-11-07 03:52:30,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 03:52:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1133 transitions. [2019-11-07 03:52:30,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-07 03:52:30,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:52:30,007 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 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] [2019-11-07 03:52:30,008 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:52:30,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:52:30,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2040254805, now seen corresponding path program 1 times [2019-11-07 03:52:30,008 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:52:30,008 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412589698] [2019-11-07 03:52:30,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:52:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:52:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-07 03:52:30,318 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412589698] [2019-11-07 03:52:30,319 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157150328] [2019-11-07 03:52:30,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:52:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:52:31,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 3265 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 03:52:31,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:52:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 03:52:31,148 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:52:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-07 03:52:31,396 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742783191] [2019-11-07 03:52:31,435 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2019-11-07 03:52:31,435 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:52:31,443 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:52:31,458 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:52:31,458 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs