/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 01:23:26,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 01:23:26,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 01:23:26,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 01:23:26,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 01:23:26,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 01:23:26,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 01:23:26,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 01:23:26,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 01:23:26,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 01:23:26,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 01:23:26,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 01:23:26,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 01:23:26,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 01:23:26,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 01:23:26,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 01:23:26,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 01:23:26,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 01:23:26,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 01:23:26,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 01:23:26,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 01:23:26,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 01:23:26,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 01:23:26,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 01:23:26,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 01:23:26,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 01:23:26,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 01:23:26,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 01:23:26,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 01:23:26,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 01:23:26,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 01:23:26,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 01:23:26,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 01:23:26,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 01:23:26,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 01:23:26,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 01:23:26,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 01:23:26,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 01:23:26,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 01:23:26,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 01:23:26,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 01:23:26,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 01:23:26,714 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 01:23:26,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 01:23:26,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 01:23:26,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 01:23:26,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 01:23:26,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 01:23:26,715 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 01:23:26,715 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 01:23:26,715 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 01:23:26,715 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 01:23:26,716 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 01:23:26,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 01:23:26,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 01:23:26,716 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 01:23:26,716 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 01:23:26,716 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 01:23:26,716 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 01:23:26,716 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 01:23:26,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 01:23:26,717 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 01:23:26,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 01:23:26,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 01:23:26,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 01:23:26,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 01:23:26,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 01:23:26,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 01:23:26,718 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 01:23:26,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 01:23:26,718 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 01:23:26,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 01:23:26,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 01:23:26,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 01:23:26,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 01:23:26,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 01:23:26,719 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 01:23:26,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 01:23:26,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 01:23:26,719 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 01:23:26,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 01:23:26,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 01:23:26,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 01:23:26,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 01:23:26,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 01:23:26,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 01:23:26,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 01:23:26,937 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 01:23:26,938 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 01:23:26,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-04-01 01:23:28,012 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 01:23:28,320 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 01:23:28,321 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-04-01 01:23:28,340 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1d6feb19/85314e96d64a4fe78c16f362840644f1/FLAGaa347b510 [2023-04-01 01:23:28,350 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1d6feb19/85314e96d64a4fe78c16f362840644f1 [2023-04-01 01:23:28,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 01:23:28,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 01:23:28,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 01:23:28,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 01:23:28,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 01:23:28,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:23:28" (1/1) ... [2023-04-01 01:23:28,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad5e8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:28, skipping insertion in model container [2023-04-01 01:23:28,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:23:28" (1/1) ... [2023-04-01 01:23:28,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 01:23:28,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 01:23:28,952 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i[144238,144251] [2023-04-01 01:23:28,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 01:23:28,985 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 01:23:29,161 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i[144238,144251] [2023-04-01 01:23:29,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 01:23:29,197 INFO L208 MainTranslator]: Completed translation [2023-04-01 01:23:29,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29 WrapperNode [2023-04-01 01:23:29,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 01:23:29,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 01:23:29,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 01:23:29,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 01:23:29,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29" (1/1) ... [2023-04-01 01:23:29,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29" (1/1) ... [2023-04-01 01:23:29,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29" (1/1) ... [2023-04-01 01:23:29,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29" (1/1) ... [2023-04-01 01:23:29,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29" (1/1) ... [2023-04-01 01:23:29,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29" (1/1) ... [2023-04-01 01:23:29,316 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29" (1/1) ... [2023-04-01 01:23:29,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29" (1/1) ... [2023-04-01 01:23:29,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 01:23:29,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 01:23:29,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 01:23:29,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 01:23:29,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29" (1/1) ... [2023-04-01 01:23:29,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 01:23:29,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:23:29,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 01:23:29,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 01:23:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 01:23:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 01:23:29,415 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 01:23:29,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_4 [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2023-04-01 01:23:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_out [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_startup [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_release [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init_termios [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_open [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_close [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_read_int_callback [2023-04-01 01:23:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_callback [2023-04-01 01:23:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write [2023-04-01 01:23:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_room [2023-04-01 01:23:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmget [2023-04-01 01:23:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmset [2023-04-01 01:23:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_set_termios [2023-04-01 01:23:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_ioctl [2023-04-01 01:23:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init [2023-04-01 01:23:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_exit [2023-04-01 01:23:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2023-04-01 01:23:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2023-04-01 01:23:29,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 01:23:29,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_flags_3 [2023-04-01 01:23:29,419 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string [2023-04-01 01:23:29,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2023-04-01 01:23:29,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_6 [2023-04-01 01:23:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_port_tty_get_7 [2023-04-01 01:23:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_flip_buffer_push_8 [2023-04-01 01:23:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_get_baud_rate_9 [2023-04-01 01:23:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_encode_baud_rate_10 [2023-04-01 01:23:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2023-04-01 01:23:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-01 01:23:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 01:23:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-04-01 01:23:29,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_got_tty [2023-04-01 01:23:29,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_tty [2023-04-01 01:23:29,421 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-04-01 01:23:29,421 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_flags [2023-04-01 01:23:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2023-04-01 01:23:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2023-04-01 01:23:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-04-01 01:23:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-04-01 01:23:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-04-01 01:23:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-04-01 01:23:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-04-01 01:23:29,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2023-04-01 01:23:29,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-04-01 01:23:29,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-04-01 01:23:29,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2023-04-01 01:23:29,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2023-04-01 01:23:29,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-04-01 01:23:29,425 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-04-01 01:23:29,425 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 01:23:29,425 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-01 01:23:29,425 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-01 01:23:29,425 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-01 01:23:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 01:23:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 01:23:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 01:23:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 01:23:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 01:23:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 01:23:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-01 01:23:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-01 01:23:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_flip_buffer_push_8 [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_get_baud_rate_9 [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_encode_baud_rate_10 [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_port_tty_get_7 [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_flags [2023-04-01 01:23:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_flags_3 [2023-04-01 01:23:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2023-04-01 01:23:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2023-04-01 01:23:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_4 [2023-04-01 01:23:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string [2023-04-01 01:23:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_got_tty [2023-04-01 01:23:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_tty [2023-04-01 01:23:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 01:23:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 01:23:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-01 01:23:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-01 01:23:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 01:23:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-01 01:23:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 01:23:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 01:23:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 01:23:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 01:23:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 01:23:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 01:23:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-01 01:23:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-04-01 01:23:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-04-01 01:23:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-01 01:23:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_out [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-04-01 01:23:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_6 [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-04-01 01:23:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_startup [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_release [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_open [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_close [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_room [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_ioctl [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmget [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmset [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_read_int_callback [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_callback [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_set_termios [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init_termios [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-01 01:23:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-01 01:23:29,438 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init [2023-04-01 01:23:29,438 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_exit [2023-04-01 01:23:29,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2023-04-01 01:23:29,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2023-04-01 01:23:29,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 01:23:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 01:23:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 01:23:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 01:23:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 01:23:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-01 01:23:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-04-01 01:23:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 01:23:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 01:23:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 01:23:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 01:23:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 01:23:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 01:23:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-01 01:23:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-01 01:23:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-01 01:23:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-01 01:23:29,959 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 01:23:29,964 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 01:23:30,239 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-01 01:23:33,436 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 01:23:33,944 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 01:23:33,944 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 01:23:33,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:23:33 BoogieIcfgContainer [2023-04-01 01:23:33,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 01:23:33,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 01:23:33,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 01:23:33,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 01:23:33,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 01:23:28" (1/3) ... [2023-04-01 01:23:33,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ffea99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:23:33, skipping insertion in model container [2023-04-01 01:23:33,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:29" (2/3) ... [2023-04-01 01:23:33,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ffea99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:23:33, skipping insertion in model container [2023-04-01 01:23:33,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:23:33" (3/3) ... [2023-04-01 01:23:33,953 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-04-01 01:23:33,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 01:23:33,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 01:23:34,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 01:23:34,018 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@176b7ddd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 01:23:34,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 01:23:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 746 states, 456 states have (on average 1.3179824561403508) internal successors, (601), 468 states have internal predecessors, (601), 205 states have call successors, (205), 81 states have call predecessors, (205), 80 states have return successors, (199), 199 states have call predecessors, (199), 199 states have call successors, (199) [2023-04-01 01:23:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-01 01:23:34,035 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:34,036 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:34,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:34,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash -920510213, now seen corresponding path program 1 times [2023-04-01 01:23:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:34,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207315241] [2023-04-01 01:23:34,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:34,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-01 01:23:34,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:34,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207315241] [2023-04-01 01:23:34,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207315241] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:34,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:23:34,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:23:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717201000] [2023-04-01 01:23:34,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:34,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:23:34,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:34,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:23:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:23:34,556 INFO L87 Difference]: Start difference. First operand has 746 states, 456 states have (on average 1.3179824561403508) internal successors, (601), 468 states have internal predecessors, (601), 205 states have call successors, (205), 81 states have call predecessors, (205), 80 states have return successors, (199), 199 states have call predecessors, (199), 199 states have call successors, (199) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-04-01 01:23:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:35,291 INFO L93 Difference]: Finished difference Result 1529 states and 2076 transitions. [2023-04-01 01:23:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:23:35,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 143 [2023-04-01 01:23:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:35,315 INFO L225 Difference]: With dead ends: 1529 [2023-04-01 01:23:35,315 INFO L226 Difference]: Without dead ends: 789 [2023-04-01 01:23:35,335 INFO L412 NwaCegarLoop]: 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 [2023-04-01 01:23:35,338 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 173 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:35,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1642 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 01:23:35,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2023-04-01 01:23:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 789. [2023-04-01 01:23:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 495 states have (on average 1.307070707070707) internal successors, (647), 500 states have internal predecessors, (647), 206 states have call successors, (206), 89 states have call predecessors, (206), 87 states have return successors, (204), 204 states have call predecessors, (204), 204 states have call successors, (204) [2023-04-01 01:23:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1057 transitions. [2023-04-01 01:23:35,406 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1057 transitions. Word has length 143 [2023-04-01 01:23:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:35,406 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 1057 transitions. [2023-04-01 01:23:35,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-04-01 01:23:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1057 transitions. [2023-04-01 01:23:35,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-04-01 01:23:35,411 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:35,411 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 01:23:35,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:35,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2115359505, now seen corresponding path program 1 times [2023-04-01 01:23:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:35,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326400998] [2023-04-01 01:23:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-04-01 01:23:35,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:35,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326400998] [2023-04-01 01:23:35,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326400998] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:35,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:23:35,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:23:35,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800195312] [2023-04-01 01:23:35,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:35,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:23:35,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:35,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:23:35,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:23:35,654 INFO L87 Difference]: Start difference. First operand 789 states and 1057 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-04-01 01:23:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:36,341 INFO L93 Difference]: Finished difference Result 1809 states and 2434 transitions. [2023-04-01 01:23:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:23:36,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 207 [2023-04-01 01:23:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:36,347 INFO L225 Difference]: With dead ends: 1809 [2023-04-01 01:23:36,347 INFO L226 Difference]: Without dead ends: 1064 [2023-04-01 01:23:36,348 INFO L412 NwaCegarLoop]: 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 [2023-04-01 01:23:36,349 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 359 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:36,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1693 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 01:23:36,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2023-04-01 01:23:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1061. [2023-04-01 01:23:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 682 states have (on average 1.2947214076246334) internal successors, (883), 688 states have internal predecessors, (883), 258 states have call successors, (258), 122 states have call predecessors, (258), 120 states have return successors, (256), 256 states have call predecessors, (256), 256 states have call successors, (256) [2023-04-01 01:23:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1397 transitions. [2023-04-01 01:23:36,378 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1397 transitions. Word has length 207 [2023-04-01 01:23:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:36,378 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1397 transitions. [2023-04-01 01:23:36,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-04-01 01:23:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1397 transitions. [2023-04-01 01:23:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-04-01 01:23:36,385 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:36,385 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:36,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 01:23:36,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:36,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2011523978, now seen corresponding path program 1 times [2023-04-01 01:23:36,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:36,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048473609] [2023-04-01 01:23:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-04-01 01:23:36,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048473609] [2023-04-01 01:23:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048473609] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:36,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:23:36,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:23:36,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726431497] [2023-04-01 01:23:36,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:36,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:23:36,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:23:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:23:36,742 INFO L87 Difference]: Start difference. First operand 1061 states and 1397 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-01 01:23:37,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:37,284 INFO L93 Difference]: Finished difference Result 2038 states and 2694 transitions. [2023-04-01 01:23:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:23:37,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 208 [2023-04-01 01:23:37,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:37,292 INFO L225 Difference]: With dead ends: 2038 [2023-04-01 01:23:37,292 INFO L226 Difference]: Without dead ends: 2035 [2023-04-01 01:23:37,294 INFO L412 NwaCegarLoop]: 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 [2023-04-01 01:23:37,298 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 836 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:37,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1722 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 01:23:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2023-04-01 01:23:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2032. [2023-04-01 01:23:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 1319 states have (on average 1.3002274450341167) internal successors, (1715), 1331 states have internal predecessors, (1715), 486 states have call successors, (486), 229 states have call predecessors, (486), 226 states have return successors, (485), 482 states have call predecessors, (485), 484 states have call successors, (485) [2023-04-01 01:23:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 2686 transitions. [2023-04-01 01:23:37,389 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 2686 transitions. Word has length 208 [2023-04-01 01:23:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:37,392 INFO L495 AbstractCegarLoop]: Abstraction has 2032 states and 2686 transitions. [2023-04-01 01:23:37,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-01 01:23:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 2686 transitions. [2023-04-01 01:23:37,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-04-01 01:23:37,396 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:37,396 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:37,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 01:23:37,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:37,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:37,398 INFO L85 PathProgramCache]: Analyzing trace with hash 166197338, now seen corresponding path program 1 times [2023-04-01 01:23:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:37,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12346498] [2023-04-01 01:23:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:37,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-04-01 01:23:37,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:37,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12346498] [2023-04-01 01:23:37,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12346498] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:37,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:23:37,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:23:37,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044035556] [2023-04-01 01:23:37,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:37,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:23:37,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:37,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:23:37,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:23:37,714 INFO L87 Difference]: Start difference. First operand 2032 states and 2686 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 01:23:38,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:38,372 INFO L93 Difference]: Finished difference Result 4567 states and 6065 transitions. [2023-04-01 01:23:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:23:38,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 230 [2023-04-01 01:23:38,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:38,382 INFO L225 Difference]: With dead ends: 4567 [2023-04-01 01:23:38,382 INFO L226 Difference]: Without dead ends: 2579 [2023-04-01 01:23:38,388 INFO L412 NwaCegarLoop]: 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 [2023-04-01 01:23:38,392 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 452 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:38,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1769 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 01:23:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2023-04-01 01:23:38,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2576. [2023-04-01 01:23:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2576 states, 1693 states have (on average 1.2911990549320733) internal successors, (2186), 1707 states have internal predecessors, (2186), 590 states have call successors, (590), 295 states have call predecessors, (590), 292 states have return successors, (589), 586 states have call predecessors, (589), 588 states have call successors, (589) [2023-04-01 01:23:38,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 3365 transitions. [2023-04-01 01:23:38,493 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 3365 transitions. Word has length 230 [2023-04-01 01:23:38,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:38,494 INFO L495 AbstractCegarLoop]: Abstraction has 2576 states and 3365 transitions. [2023-04-01 01:23:38,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 01:23:38,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 3365 transitions. [2023-04-01 01:23:38,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-04-01 01:23:38,498 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:38,498 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:38,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 01:23:38,498 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:38,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:38,499 INFO L85 PathProgramCache]: Analyzing trace with hash -783511330, now seen corresponding path program 1 times [2023-04-01 01:23:38,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:38,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620464570] [2023-04-01 01:23:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:38,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-04-01 01:23:39,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620464570] [2023-04-01 01:23:39,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620464570] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:23:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399466113] [2023-04-01 01:23:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:39,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:23:39,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:23:39,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 01:23:39,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 01:23:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:39,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 01:23:39,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:23:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-04-01 01:23:40,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 01:23:40,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399466113] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:40,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 01:23:40,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2023-04-01 01:23:40,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576866284] [2023-04-01 01:23:40,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:40,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 01:23:40,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:40,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 01:23:40,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 01:23:40,035 INFO L87 Difference]: Start difference. First operand 2576 states and 3365 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2023-04-01 01:23:42,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:42,095 INFO L93 Difference]: Finished difference Result 7658 states and 9985 transitions. [2023-04-01 01:23:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 01:23:42,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 256 [2023-04-01 01:23:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:42,112 INFO L225 Difference]: With dead ends: 7658 [2023-04-01 01:23:42,112 INFO L226 Difference]: Without dead ends: 5006 [2023-04-01 01:23:42,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-04-01 01:23:42,118 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 891 mSDsluCounter, 5822 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 7482 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:42,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 7482 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-01 01:23:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2023-04-01 01:23:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 4924. [2023-04-01 01:23:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4924 states, 3249 states have (on average 1.2868574946137272) internal successors, (4181), 3266 states have internal predecessors, (4181), 1125 states have call successors, (1125), 553 states have call predecessors, (1125), 549 states have return successors, (1125), 1112 states have call predecessors, (1125), 1123 states have call successors, (1125) [2023-04-01 01:23:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4924 states to 4924 states and 6431 transitions. [2023-04-01 01:23:42,297 INFO L78 Accepts]: Start accepts. Automaton has 4924 states and 6431 transitions. Word has length 256 [2023-04-01 01:23:42,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:42,298 INFO L495 AbstractCegarLoop]: Abstraction has 4924 states and 6431 transitions. [2023-04-01 01:23:42,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2023-04-01 01:23:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4924 states and 6431 transitions. [2023-04-01 01:23:42,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-04-01 01:23:42,302 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:42,302 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:42,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 01:23:42,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:23:42,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:42,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash 570920512, now seen corresponding path program 1 times [2023-04-01 01:23:42,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:42,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578576773] [2023-04-01 01:23:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:42,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-04-01 01:23:43,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:43,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578576773] [2023-04-01 01:23:43,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578576773] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:23:43,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332459788] [2023-04-01 01:23:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:43,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:23:43,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:23:43,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 01:23:43,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 01:23:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:43,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 2930 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 01:23:43,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:23:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-04-01 01:23:44,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 01:23:44,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332459788] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:44,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 01:23:44,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 01:23:44,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996262664] [2023-04-01 01:23:44,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:44,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 01:23:44,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:44,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 01:23:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 01:23:44,126 INFO L87 Difference]: Start difference. First operand 4924 states and 6431 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2023-04-01 01:23:45,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:45,789 INFO L93 Difference]: Finished difference Result 10305 states and 13548 transitions. [2023-04-01 01:23:45,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 01:23:45,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) Word has length 288 [2023-04-01 01:23:45,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:45,842 INFO L225 Difference]: With dead ends: 10305 [2023-04-01 01:23:45,842 INFO L226 Difference]: Without dead ends: 5425 [2023-04-01 01:23:45,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 01:23:45,870 INFO L413 NwaCegarLoop]: 1099 mSDtfsCounter, 427 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:45,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 2176 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 01:23:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5425 states. [2023-04-01 01:23:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5425 to 5234. [2023-04-01 01:23:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 3499 states have (on average 1.2966561874821378) internal successors, (4537), 3516 states have internal predecessors, (4537), 1153 states have call successors, (1153), 581 states have call predecessors, (1153), 581 states have return successors, (1157), 1144 states have call predecessors, (1157), 1151 states have call successors, (1157) [2023-04-01 01:23:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6847 transitions. [2023-04-01 01:23:46,232 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6847 transitions. Word has length 288 [2023-04-01 01:23:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:46,235 INFO L495 AbstractCegarLoop]: Abstraction has 5234 states and 6847 transitions. [2023-04-01 01:23:46,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2023-04-01 01:23:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6847 transitions. [2023-04-01 01:23:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-04-01 01:23:46,245 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:46,246 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:46,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 01:23:46,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 01:23:46,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:46,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:46,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1927265513, now seen corresponding path program 1 times [2023-04-01 01:23:46,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:46,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644338683] [2023-04-01 01:23:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:46,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-04-01 01:23:46,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:46,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644338683] [2023-04-01 01:23:46,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644338683] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:46,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:23:46,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 01:23:46,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711486808] [2023-04-01 01:23:46,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:46,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 01:23:46,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:46,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 01:23:46,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 01:23:46,977 INFO L87 Difference]: Start difference. First operand 5234 states and 6847 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) [2023-04-01 01:23:48,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:48,436 INFO L93 Difference]: Finished difference Result 11517 states and 15114 transitions. [2023-04-01 01:23:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 01:23:48,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) Word has length 304 [2023-04-01 01:23:48,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:48,485 INFO L225 Difference]: With dead ends: 11517 [2023-04-01 01:23:48,485 INFO L226 Difference]: Without dead ends: 6327 [2023-04-01 01:23:48,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 01:23:48,499 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 472 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 3930 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:48,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 3930 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 01:23:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6327 states. [2023-04-01 01:23:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6327 to 6324. [2023-04-01 01:23:48,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6324 states, 4245 states have (on average 1.2878680800942286) internal successors, (5467), 4264 states have internal predecessors, (5467), 1357 states have call successors, (1357), 721 states have call predecessors, (1357), 721 states have return successors, (1361), 1346 states have call predecessors, (1361), 1355 states have call successors, (1361) [2023-04-01 01:23:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 8185 transitions. [2023-04-01 01:23:48,812 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 8185 transitions. Word has length 304 [2023-04-01 01:23:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:48,813 INFO L495 AbstractCegarLoop]: Abstraction has 6324 states and 8185 transitions. [2023-04-01 01:23:48,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) [2023-04-01 01:23:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 8185 transitions. [2023-04-01 01:23:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-04-01 01:23:48,821 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:48,821 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:48,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 01:23:48,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:48,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:48,821 INFO L85 PathProgramCache]: Analyzing trace with hash 166710968, now seen corresponding path program 1 times [2023-04-01 01:23:48,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:48,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628061673] [2023-04-01 01:23:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:48,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-04-01 01:23:49,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:49,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628061673] [2023-04-01 01:23:49,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628061673] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:23:49,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276229204] [2023-04-01 01:23:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:49,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:23:49,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:23:49,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 01:23:49,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 01:23:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:50,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 01:23:50,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:23:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-04-01 01:23:50,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 01:23:50,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276229204] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:50,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 01:23:50,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 01:23:50,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370125934] [2023-04-01 01:23:50,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:50,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 01:23:50,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 01:23:50,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 01:23:50,322 INFO L87 Difference]: Start difference. First operand 6324 states and 8185 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (49), 4 states have call predecessors, (49), 3 states have call successors, (49) [2023-04-01 01:23:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:51,641 INFO L93 Difference]: Finished difference Result 13543 states and 17576 transitions. [2023-04-01 01:23:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 01:23:51,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (49), 4 states have call predecessors, (49), 3 states have call successors, (49) Word has length 353 [2023-04-01 01:23:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:51,675 INFO L225 Difference]: With dead ends: 13543 [2023-04-01 01:23:51,675 INFO L226 Difference]: Without dead ends: 7263 [2023-04-01 01:23:51,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 01:23:51,689 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 431 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:51,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 2782 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 01:23:51,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7263 states. [2023-04-01 01:23:51,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7263 to 6630. [2023-04-01 01:23:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6630 states, 4491 states have (on average 1.295702516143398) internal successors, (5819), 4510 states have internal predecessors, (5819), 1385 states have call successors, (1385), 749 states have call predecessors, (1385), 753 states have return successors, (1393), 1378 states have call predecessors, (1393), 1383 states have call successors, (1393) [2023-04-01 01:23:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6630 states to 6630 states and 8597 transitions. [2023-04-01 01:23:51,895 INFO L78 Accepts]: Start accepts. Automaton has 6630 states and 8597 transitions. Word has length 353 [2023-04-01 01:23:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:51,896 INFO L495 AbstractCegarLoop]: Abstraction has 6630 states and 8597 transitions. [2023-04-01 01:23:51,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (49), 4 states have call predecessors, (49), 3 states have call successors, (49) [2023-04-01 01:23:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 6630 states and 8597 transitions. [2023-04-01 01:23:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-04-01 01:23:51,904 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:51,904 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:51,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 01:23:52,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:23:52,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:52,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1885620488, now seen corresponding path program 1 times [2023-04-01 01:23:52,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:52,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423737664] [2023-04-01 01:23:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:52,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2023-04-01 01:23:53,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:53,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423737664] [2023-04-01 01:23:53,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423737664] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:23:53,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493199466] [2023-04-01 01:23:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:53,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:23:53,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:23:53,317 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 01:23:53,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 01:23:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:54,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 3611 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 01:23:54,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:23:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-04-01 01:23:54,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 01:23:54,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493199466] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:54,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 01:23:54,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2023-04-01 01:23:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235918350] [2023-04-01 01:23:54,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:54,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 01:23:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:54,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 01:23:54,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 01:23:54,127 INFO L87 Difference]: Start difference. First operand 6630 states and 8597 transitions. Second operand has 6 states, 4 states have (on average 40.0) internal successors, (160), 5 states have internal predecessors, (160), 3 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-04-01 01:23:55,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:55,475 INFO L93 Difference]: Finished difference Result 13286 states and 17245 transitions. [2023-04-01 01:23:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 01:23:55,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 40.0) internal successors, (160), 5 states have internal predecessors, (160), 3 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 399 [2023-04-01 01:23:55,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:55,501 INFO L225 Difference]: With dead ends: 13286 [2023-04-01 01:23:55,501 INFO L226 Difference]: Without dead ends: 6664 [2023-04-01 01:23:55,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 01:23:55,517 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 0 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4268 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:55,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4268 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 01:23:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2023-04-01 01:23:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 6632. [2023-04-01 01:23:55,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 4492 states have (on average 1.2956366874443455) internal successors, (5820), 4512 states have internal predecessors, (5820), 1385 states have call successors, (1385), 749 states have call predecessors, (1385), 754 states have return successors, (1394), 1378 states have call predecessors, (1394), 1383 states have call successors, (1394) [2023-04-01 01:23:55,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 8599 transitions. [2023-04-01 01:23:55,720 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 8599 transitions. Word has length 399 [2023-04-01 01:23:55,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:55,721 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 8599 transitions. [2023-04-01 01:23:55,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 40.0) internal successors, (160), 5 states have internal predecessors, (160), 3 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-04-01 01:23:55,721 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 8599 transitions. [2023-04-01 01:23:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-04-01 01:23:55,729 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:55,729 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:55,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 01:23:55,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:23:55,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:55,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:55,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1000553650, now seen corresponding path program 1 times [2023-04-01 01:23:55,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:55,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059948342] [2023-04-01 01:23:55,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:55,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2023-04-01 01:23:56,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:56,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059948342] [2023-04-01 01:23:56,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059948342] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:23:56,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597219512] [2023-04-01 01:23:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:56,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:23:56,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:23:56,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 01:23:56,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 01:23:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:57,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 3636 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 01:23:57,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:23:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-04-01 01:23:57,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 01:23:57,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597219512] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:57,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 01:23:57,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2023-04-01 01:23:57,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996254222] [2023-04-01 01:23:57,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:57,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 01:23:57,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:57,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 01:23:57,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 01:23:57,457 INFO L87 Difference]: Start difference. First operand 6632 states and 8599 transitions. Second operand has 6 states, 4 states have (on average 41.25) internal successors, (165), 6 states have internal predecessors, (165), 3 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2023-04-01 01:23:58,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:58,621 INFO L93 Difference]: Finished difference Result 13238 states and 17169 transitions. [2023-04-01 01:23:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 01:23:58,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 41.25) internal successors, (165), 6 states have internal predecessors, (165), 3 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 403 [2023-04-01 01:23:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:58,639 INFO L225 Difference]: With dead ends: 13238 [2023-04-01 01:23:58,639 INFO L226 Difference]: Without dead ends: 6633 [2023-04-01 01:23:58,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-01 01:23:58,651 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 3 mSDsluCounter, 3399 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:58,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4253 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 01:23:58,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2023-04-01 01:23:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 6633. [2023-04-01 01:23:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6633 states, 4493 states have (on average 1.2955708880480747) internal successors, (5821), 4513 states have internal predecessors, (5821), 1385 states have call successors, (1385), 749 states have call predecessors, (1385), 754 states have return successors, (1394), 1378 states have call predecessors, (1394), 1383 states have call successors, (1394) [2023-04-01 01:23:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6633 states to 6633 states and 8600 transitions. [2023-04-01 01:23:58,821 INFO L78 Accepts]: Start accepts. Automaton has 6633 states and 8600 transitions. Word has length 403 [2023-04-01 01:23:58,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:58,821 INFO L495 AbstractCegarLoop]: Abstraction has 6633 states and 8600 transitions. [2023-04-01 01:23:58,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 41.25) internal successors, (165), 6 states have internal predecessors, (165), 3 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2023-04-01 01:23:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 6633 states and 8600 transitions. [2023-04-01 01:23:58,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-04-01 01:23:58,827 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:58,828 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:58,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 01:23:59,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 01:23:59,039 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:59,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:59,040 INFO L85 PathProgramCache]: Analyzing trace with hash -523473168, now seen corresponding path program 1 times [2023-04-01 01:23:59,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:59,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446501578] [2023-04-01 01:23:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-04-01 01:23:59,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:59,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446501578] [2023-04-01 01:23:59,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446501578] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:23:59,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562896727] [2023-04-01 01:23:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:59,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:23:59,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:23:59,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 01:23:59,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 01:24:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:24:00,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 3711 conjuncts, 47 conjunts are in the unsatisfiable core [2023-04-01 01:24:00,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 01:24:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 117 proven. 17 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2023-04-01 01:24:00,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 01:24:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-04-01 01:24:01,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562896727] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 01:24:01,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [908031042] [2023-04-01 01:24:01,472 INFO L159 IcfgInterpreter]: Started Sifa with 240 locations of interest [2023-04-01 01:24:01,472 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 01:24:01,475 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 01:24:01,478 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 01:24:01,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 01:24:08,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 130 for LOIs [2023-04-01 01:24:10,981 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 151 for LOIs