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-f4eb214f-m [2019-10-13 22:54:33,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:54:33,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:54:33,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:54:33,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:54:33,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:54:33,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:54:33,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:54:33,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:54:33,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:54:33,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:54:33,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:54:33,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:54:33,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:54:33,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:54:33,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:54:33,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:54:33,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:54:33,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:54:33,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:54:33,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:54:33,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:54:33,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:54:33,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:54:33,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:54:33,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:54:33,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:54:33,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:54:33,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:54:33,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:54:33,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:54:33,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:54:33,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:54:33,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:54:33,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:54:33,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:54:33,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:54:33,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:54:33,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:54:33,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:54:33,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:54:33,522 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 22:54:33,556 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:54:33,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:54:33,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:54:33,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:54:33,562 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:54:33,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:54:33,562 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:54:33,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:54:33,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:54:33,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:54:33,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:54:33,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:54:33,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:54:33,566 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:54:33,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:54:33,566 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:54:33,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:54:33,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:54:33,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:54:33,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:54:33,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:54:33,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:54:33,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:54:33,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:54:33,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:54:33,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:54:33,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:54:33,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:54:33,569 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 22:54:33,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:54:33,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:54:33,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:54:33,905 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:54:33,906 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:54:33,907 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-10-13 22:54:33,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655549807/8cf5967045c34654bb5562b857a6d3c9/FLAG0c0a189c0 [2019-10-13 22:54:34,803 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:54:34,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-10-13 22:54:34,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655549807/8cf5967045c34654bb5562b857a6d3c9/FLAG0c0a189c0 [2019-10-13 22:54:34,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655549807/8cf5967045c34654bb5562b857a6d3c9 [2019-10-13 22:54:34,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:54:34,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:54:34,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:54:34,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:54:34,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:54:34,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:54:34" (1/1) ... [2019-10-13 22:54:34,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191613fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:34, skipping insertion in model container [2019-10-13 22:54:34,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:54:34" (1/1) ... [2019-10-13 22:54:34,899 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:54:34,998 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:54:36,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:54:36,199 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:54:36,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:54:36,575 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:54:36,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:36 WrapperNode [2019-10-13 22:54:36,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:54:36,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:54:36,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:54:36,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:54:36,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:36" (1/1) ... [2019-10-13 22:54:36,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:36" (1/1) ... [2019-10-13 22:54:36,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:36" (1/1) ... [2019-10-13 22:54:36,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:36" (1/1) ... [2019-10-13 22:54:36,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:36" (1/1) ... [2019-10-13 22:54:36,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:36" (1/1) ... [2019-10-13 22:54:36,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:36" (1/1) ... [2019-10-13 22:54:36,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:54:36,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:54:36,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:54:36,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:54:36,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:36" (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 22:54:36,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:54:36,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:54:36,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:54:36,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 22:54:36,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 22:54:36,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 22:54:36,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 22:54:36,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:54:36,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 22:54:36,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-10-13 22:54:36,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 22:54:36,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 22:54:36,910 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 22:54:36,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:54:36,911 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:54:36,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kzalloc_1 [2019-10-13 22:54:36,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-13 22:54:36,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-10-13 22:54:36,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2019-10-13 22:54:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2019-10-13 22:54:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2019-10-13 22:54:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-13 22:54:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2019-10-13 22:54:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2019-10-13 22:54:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure qcprobe [2019-10-13 22:54:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure qc_release [2019-10-13 22:54:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure qcinit [2019-10-13 22:54:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure qcexit [2019-10-13 22:54:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-10-13 22:54:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-13 22:54:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:54:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 22:54:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-10-13 22:54:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_3 [2019-10-13 22:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_4 [2019-10-13 22:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_5 [2019-10-13 22:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_6 [2019-10-13 22:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_7 [2019-10-13 22:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_8 [2019-10-13 22:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_9 [2019-10-13 22:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_10 [2019-10-13 22:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_11 [2019-10-13 22:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_12 [2019-10-13 22:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2019-10-13 22:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc [2019-10-13 22:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2019-10-13 22:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 22:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-13 22:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_2 [2019-10-13 22:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 22:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_enable_autosuspend [2019-10-13 22:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 22:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-10-13 22:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-10-13 22:54:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-10-13 22:54:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-10-13 22:54:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2019-10-13 22:54:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2019-10-13 22:54:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2019-10-13 22:54:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2019-10-13 22:54:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2019-10-13 22:54:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2019-10-13 22:54:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2019-10-13 22:54:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_release [2019-10-13 22:54:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2019-10-13 22:54:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_startup [2019-10-13 22:54:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2019-10-13 22:54:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2019-10-13 22:54:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2019-10-13 22:54:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:54:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:54:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 22:54:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 22:54:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:54:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 22:54:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:54:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:54:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 22:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:54:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:54:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 22:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 22:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 22:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 22:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 22:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 22:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-10-13 22:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 22:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc [2019-10-13 22:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2019-10-13 22:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 22:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 22:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_4 [2019-10-13 22:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_6 [2019-10-13 22:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_8 [2019-10-13 22:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_10 [2019-10-13 22:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_11 [2019-10-13 22:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_12 [2019-10-13 22:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kzalloc_1 [2019-10-13 22:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 22:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-10-13 22:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-13 22:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-13 22:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-13 22:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-10-13 22:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2019-10-13 22:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2019-10-13 22:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2019-10-13 22:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_enable_autosuspend [2019-10-13 22:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 22:54:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-10-13 22:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-13 22:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 22:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2019-10-13 22:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2019-10-13 22:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_3 [2019-10-13 22:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_5 [2019-10-13 22:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_7 [2019-10-13 22:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_9 [2019-10-13 22:54:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2019-10-13 22:54:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:54:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2019-10-13 22:54:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:54:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-10-13 22:54:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-10-13 22:54:36,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-10-13 22:54:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-10-13 22:54:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2019-10-13 22:54:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2019-10-13 22:54:36,983 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2019-10-13 22:54:36,986 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2019-10-13 22:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_startup [2019-10-13 22:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2019-10-13 22:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_release [2019-10-13 22:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2019-10-13 22:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2019-10-13 22:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2019-10-13 22:54:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2019-10-13 22:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2019-10-13 22:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure qcprobe [2019-10-13 22:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure qc_release [2019-10-13 22:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure qcinit [2019-10-13 22:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure qcexit [2019-10-13 22:54:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_2 [2019-10-13 22:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 22:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:54:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:54:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:54:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:54:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:54:38,045 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 22:54:39,977 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:54:39,977 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:54:39,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:54:39 BoogieIcfgContainer [2019-10-13 22:54:39,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:54:39,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:54:39,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:54:39,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:54:39,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:54:34" (1/3) ... [2019-10-13 22:54:39,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70776d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:54:39, skipping insertion in model container [2019-10-13 22:54:39,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:54:36" (2/3) ... [2019-10-13 22:54:39,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70776d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:54:39, skipping insertion in model container [2019-10-13 22:54:39,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:54:39" (3/3) ... [2019-10-13 22:54:39,989 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-10-13 22:54:39,999 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:54:40,011 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:54:40,023 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:54:40,060 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:54:40,060 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:54:40,060 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:54:40,061 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:54:40,061 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:54:40,061 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:54:40,061 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:54:40,061 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:54:40,099 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states. [2019-10-13 22:54:40,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 22:54:40,112 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:54:40,114 INFO L380 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] [2019-10-13 22:54:40,116 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:54:40,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:54:40,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1560546538, now seen corresponding path program 1 times [2019-10-13 22:54:40,132 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:54:40,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700200039] [2019-10-13 22:54:40,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:40,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:40,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:54:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:54:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 22:54:40,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700200039] [2019-10-13 22:54:41,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:54:41,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:54:41,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976771070] [2019-10-13 22:54:41,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:54:41,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:54:41,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:54:41,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:54:41,023 INFO L87 Difference]: Start difference. First operand 457 states. Second operand 3 states. [2019-10-13 22:54:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:54:41,199 INFO L93 Difference]: Finished difference Result 870 states and 1155 transitions. [2019-10-13 22:54:41,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:54:41,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-10-13 22:54:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:54:41,244 INFO L225 Difference]: With dead ends: 870 [2019-10-13 22:54:41,244 INFO L226 Difference]: Without dead ends: 828 [2019-10-13 22:54:41,252 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 22:54:41,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2019-10-13 22:54:41,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 799. [2019-10-13 22:54:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2019-10-13 22:54:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1049 transitions. [2019-10-13 22:54:41,438 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1049 transitions. Word has length 58 [2019-10-13 22:54:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:54:41,439 INFO L462 AbstractCegarLoop]: Abstraction has 799 states and 1049 transitions. [2019-10-13 22:54:41,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:54:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1049 transitions. [2019-10-13 22:54:41,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 22:54:41,458 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:54:41,459 INFO L380 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] [2019-10-13 22:54:41,459 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:54:41,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:54:41,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1135876153, now seen corresponding path program 1 times [2019-10-13 22:54:41,460 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:54:41,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790364517] [2019-10-13 22:54:41,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:41,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:41,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:54:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:54:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 22:54:41,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790364517] [2019-10-13 22:54:41,750 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:54:41,751 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:54:41,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111929718] [2019-10-13 22:54:41,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:54:41,754 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:54:41,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:54:41,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:54:41,755 INFO L87 Difference]: Start difference. First operand 799 states and 1049 transitions. Second operand 3 states. [2019-10-13 22:54:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:54:42,116 INFO L93 Difference]: Finished difference Result 1780 states and 2327 transitions. [2019-10-13 22:54:42,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:54:42,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2019-10-13 22:54:42,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:54:42,124 INFO L225 Difference]: With dead ends: 1780 [2019-10-13 22:54:42,124 INFO L226 Difference]: Without dead ends: 1002 [2019-10-13 22:54:42,130 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 22:54:42,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2019-10-13 22:54:42,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 996. [2019-10-13 22:54:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2019-10-13 22:54:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1297 transitions. [2019-10-13 22:54:42,202 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1297 transitions. Word has length 95 [2019-10-13 22:54:42,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:54:42,203 INFO L462 AbstractCegarLoop]: Abstraction has 996 states and 1297 transitions. [2019-10-13 22:54:42,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:54:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1297 transitions. [2019-10-13 22:54:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 22:54:42,215 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:54:42,215 INFO L380 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] [2019-10-13 22:54:42,216 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:54:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:54:42,216 INFO L82 PathProgramCache]: Analyzing trace with hash -64700418, now seen corresponding path program 1 times [2019-10-13 22:54:42,217 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:54:42,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353230757] [2019-10-13 22:54:42,217 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:42,217 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:42,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:54:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:54:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 22:54:42,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353230757] [2019-10-13 22:54:42,696 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:54:42,696 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:54:42,697 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195343466] [2019-10-13 22:54:42,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:54:42,699 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:54:42,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:54:42,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:54:42,700 INFO L87 Difference]: Start difference. First operand 996 states and 1297 transitions. Second operand 3 states. [2019-10-13 22:54:42,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:54:42,922 INFO L93 Difference]: Finished difference Result 1895 states and 2493 transitions. [2019-10-13 22:54:42,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:54:42,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2019-10-13 22:54:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:54:42,935 INFO L225 Difference]: With dead ends: 1895 [2019-10-13 22:54:42,935 INFO L226 Difference]: Without dead ends: 870 [2019-10-13 22:54:42,938 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 22:54:42,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-10-13 22:54:42,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 857. [2019-10-13 22:54:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2019-10-13 22:54:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1132 transitions. [2019-10-13 22:54:42,994 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1132 transitions. Word has length 135 [2019-10-13 22:54:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:54:42,997 INFO L462 AbstractCegarLoop]: Abstraction has 857 states and 1132 transitions. [2019-10-13 22:54:42,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:54:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1132 transitions. [2019-10-13 22:54:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 22:54:43,008 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:54:43,008 INFO L380 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] [2019-10-13 22:54:43,008 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:54:43,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:54:43,009 INFO L82 PathProgramCache]: Analyzing trace with hash -716007649, now seen corresponding path program 1 times [2019-10-13 22:54:43,009 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:54:43,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474558738] [2019-10-13 22:54:43,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:43,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:43,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:54:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:54:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-10-13 22:54:43,309 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474558738] [2019-10-13 22:54:43,310 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:54:43,310 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:54:43,310 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844720159] [2019-10-13 22:54:43,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:54:43,311 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:54:43,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:54:43,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:54:43,312 INFO L87 Difference]: Start difference. First operand 857 states and 1132 transitions. Second operand 4 states. [2019-10-13 22:54:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:54:43,384 INFO L93 Difference]: Finished difference Result 1701 states and 2249 transitions. [2019-10-13 22:54:43,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:54:43,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-10-13 22:54:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:54:43,391 INFO L225 Difference]: With dead ends: 1701 [2019-10-13 22:54:43,391 INFO L226 Difference]: Without dead ends: 858 [2019-10-13 22:54:43,394 INFO L600 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 [2019-10-13 22:54:43,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2019-10-13 22:54:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2019-10-13 22:54:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2019-10-13 22:54:43,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1133 transitions. [2019-10-13 22:54:43,443 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1133 transitions. Word has length 137 [2019-10-13 22:54:43,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:54:43,444 INFO L462 AbstractCegarLoop]: Abstraction has 858 states and 1133 transitions. [2019-10-13 22:54:43,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:54:43,444 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1133 transitions. [2019-10-13 22:54:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 22:54:43,447 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:54:43,448 INFO L380 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] [2019-10-13 22:54:43,448 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:54:43,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:54:43,448 INFO L82 PathProgramCache]: Analyzing trace with hash 2040254805, now seen corresponding path program 1 times [2019-10-13 22:54:43,449 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:54:43,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176362994] [2019-10-13 22:54:43,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:43,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:43,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:54:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:54:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-13 22:54:43,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176362994] [2019-10-13 22:54:43,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704146909] [2019-10-13 22:54:43,779 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 22:54:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:54:44,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 3265 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 22:54:44,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:54:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 22:54:44,697 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:54:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-13 22:54:45,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1541577460] [2019-10-13 22:54:45,035 INFO L162 IcfgInterpreter]: Started Sifa with 108 locations of interest [2019-10-13 22:54:45,036 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:54:45,043 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:54:45,051 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:54:45,052 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs